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Author SHA1 Message Date
Linus Torvalds 2837461dbe SCSI fixes on 20180613 
This is a set of minor (and safe changes) that didn't make the initial
 pull request plus some bug fixes.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of minor (and safe changes) that didn't make the initial
  pull request plus some bug fixes"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qla2xxx: Mask off Scope bits in retry delay
  scsi: qla2xxx: Fix crash on qla2x00_mailbox_command
  scsi: aic7xxx: aic79xx: fix potential null pointer dereference on ahd
  scsi: mpt3sas: Add an I/O barrier
  scsi: qla2xxx: Fix setting lower transfer speed if GPSC fails
  scsi: hpsa: disable device during shutdown
  scsi: sd_zbc: Fix sd_zbc_check_zone_size() error path
  scsi: aacraid: remove bogus GFP_DMA32 specifies
 2018-06-14 16:35:32 +09:00
Kees Cook 6396bb2215 treewide: kzalloc() -> kcalloc() 
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:

        kzalloc(a * b, gfp)

with:
        kcalloc(a * b, gfp)

as well as handling cases of:

        kzalloc(a * b * c, gfp)

with:

        kzalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kzalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kzalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kzalloc
+ kcalloc
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kzalloc(sizeof(THING) * C2, ...)
|
  kzalloc(sizeof(TYPE) * C2, ...)
|
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Kees Cook 6da2ec5605 treewide: kmalloc() -> kmalloc_array() 
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This
patch replaces cases of:

        kmalloc(a * b, gfp)

with:
        kmalloc_array(a * b, gfp)

as well as handling cases of:

        kmalloc(a * b * c, gfp)

with:

        kmalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kmalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kmalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The tools/ directory was manually excluded, since it has its own
implementation of kmalloc().

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kmalloc
+ kmalloc_array
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kmalloc(sizeof(THING) * C2, ...)
|
  kmalloc(sizeof(TYPE) * C2, ...)
|
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(C1 * C2, ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
 2018-06-12 16:19:22 -07:00
Christoph Hellwig a0c1c185fb scsi: aacraid: remove bogus GFP_DMA32 specifies 
For one GFP_DMA32 does not actually work with kmalloc, as we only have
GFP_DMA and GFP_KERNEL caches, but not GFP_DMA32.  Second the memory
is mapped using the proper DMA API anyway, which would include proper
bounce buffering if needed by the device.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-06-05 21:15:08 -04:00
Dave Carroll 7d3af7d96a scsi: aacraid: Correct hba_send to include iu_type 
commit b60710ec7d ("scsi: aacraid: enable sending of TMFs from
aac_hba_send()") allows aac_hba_send() to send scsi commands, and TMF
requests, but the existing code only updates the iu_type for scsi
commands. For TMF requests we are sending an unknown iu_type to
firmware, which causes a fault.

Include iu_type prior to determining the validity of the command

Reported-by: Noah Misner <nmisner@us.ibm.com>
Fixes: b60710ec7d ("aacraid: enable sending of TMFs from aac_hba_send()")
Fixes: 423400e64d ("aacraid: Include HBA direct interface")
Tested-by: Noah Misner <nmisner@us.ibm.com>
cc: stable@vger.kernel.org
Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-05-01 23:27:18 -04:00
Dave Carroll 1c6b41fb92 scsi: aacraid: Insure command thread is not recursively stopped 
If a recursive IOP_RESET is invoked, usually due to the eh_thread
handling errors after the first reset, be sure we flag that the command
thread has been stopped to avoid an Oops of the form;

 [ 336.620256] CPU: 28 PID: 1193 Comm: scsi_eh_0 Kdump: loaded Not tainted 4.14.0-49.el7a.ppc64le #1
 [ 336.620297] task: c000003fd630b800 task.stack: c000003fd61a4000
 [ 336.620326] NIP: c000000000176794 LR: c00000000013038c CTR: c00000000024bc10
 [ 336.620361] REGS: c000003fd61a7720 TRAP: 0300 Not tainted (4.14.0-49.el7a.ppc64le)
 [ 336.620395] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 22084022 XER: 20040000
 [ 336.620435] CFAR: c000000000130388 DAR: 0000000000000000 DSISR: 40000000 SOFTE: 1
 [ 336.620435] GPR00: c00000000013038c c000003fd61a79a0 c0000000014c7e00 0000000000000000
 [ 336.620435] GPR04: 000000000000000c 000000000000000c 9000000000009033 0000000000000477
 [ 336.620435] GPR08: 0000000000000477 0000000000000000 0000000000000000 c008000010f7d940
 [ 336.620435] GPR12: c00000000024bc10 c000000007a33400 c0000000001708a8 c000003fe3b881d8
 [ 336.620435] GPR16: c000003fe3b88060 c000003fd61a7d10 fffffffffffff000 000000000000001e
 [ 336.620435] GPR20: 0000000000000001 c000000000ebf1a0 0000000000000001 c000003fe3b88000
 [ 336.620435] GPR24: 0000000000000003 0000000000000002 c000003fe3b88840 c000003fe3b887e8
 [ 336.620435] GPR28: c000003fe3b88000 c000003fc8181788 0000000000000000 c000003fc8181700
 [ 336.620750] NIP [c000000000176794] exit_creds+0x34/0x160
 [ 336.620775] LR [c00000000013038c] __put_task_struct+0x8c/0x1f0
 [ 336.620804] Call Trace:
 [ 336.620817] [c000003fd61a79a0] [c000003fe3b88000] 0xc000003fe3b88000 (unreliable)
 [ 336.620853] [c000003fd61a79d0] [c00000000013038c] __put_task_struct+0x8c/0x1f0
 [ 336.620889] [c000003fd61a7a00] [c000000000171418] kthread_stop+0x1e8/0x1f0
 [ 336.620922] [c000003fd61a7a40] [c008000010f7448c] aac_reset_adapter+0x14c/0x8d0 [aacraid]
 [ 336.620959] [c000003fd61a7b00] [c008000010f60174] aac_eh_host_reset+0x84/0x100 [aacraid]
 [ 336.621010] [c000003fd61a7b30] [c000000000864f24] scsi_try_host_reset+0x74/0x180
 [ 336.621046] [c000003fd61a7bb0] [c000000000867ac0] scsi_eh_ready_devs+0xc00/0x14d0
 [ 336.625165] [c000003fd61a7ca0] [c0000000008699e0] scsi_error_handler+0x550/0x730
 [ 336.632101] [c000003fd61a7dc0] [c000000000170a08] kthread+0x168/0x1b0
 [ 336.639031] [c000003fd61a7e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
 [ 336.645971] Instruction dump:
 [ 336.648743] 384216a0 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c7f1b78 60000000 60000000
 [ 336.657056] 39400000 e87f0838 f95f0838 7c0004ac <7d401828> 314affff 7d40192d 40c2fff4
 [ 336.663997] -[ end trace 4640cf8d4945ad95 ]-

So flag when the thread is stopped by setting the thread pointer to NULL.

Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-04-09 21:08:30 -04:00
Linus Torvalds 052c220da3 SCSI for-linus on 20180404 
This is mostly updates of the usual drivers: arcmsr, qla2xx, lpfc,
 ufs, mpt3sas, hisi_sas.  In addition we have removed several really
 old drivers: sym53c416, NCR53c406a, fdomain, fdomain_cs and removed
 the old scsi_module.c initialization from all remaining drivers.  Plus
 an assortment of bug fixes, initialization errors and other minor
 fixes.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates of the usual drivers: arcmsr, qla2xx, lpfc,
  ufs, mpt3sas, hisi_sas.

  In addition we have removed several really old drivers: sym53c416,
  NCR53c406a, fdomain, fdomain_cs and removed the old scsi_module.c
  initialization from all remaining drivers.

  Plus an assortment of bug fixes, initialization errors and other minor
  fixes"

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (168 commits)
  scsi: ufs: Add support for Auto-Hibernate Idle Timer
  scsi: ufs: sysfs: reworking of the rpm_lvl and spm_lvl entries
  scsi: qla2xxx: fx00 copypaste typo
  scsi: qla2xxx: fix error message on <qla2400
  scsi: smartpqi: update driver version
  scsi: smartpqi: workaround fw bug for oq deletion
  scsi: arcmsr: Change driver version to v1.40.00.05-20180309
  scsi: arcmsr: Sleep to avoid CPU stuck too long for waiting adapter ready
  scsi: arcmsr: Handle adapter removed due to thunderbolt cable disconnection.
  scsi: arcmsr: Rename ACB_F_BUS_HANG_ON to ACB_F_ADAPTER_REMOVED for adapter hot-plug
  scsi: qla2xxx: Update driver version to 10.00.00.06-k
  scsi: qla2xxx: Fix Async GPN_FT for FCP and FC-NVMe scan
  scsi: qla2xxx: Cleanup code to improve FC-NVMe error handling
  scsi: qla2xxx: Fix FC-NVMe IO abort during driver reset
  scsi: qla2xxx: Fix retry for PRLI RJT with reason of BUSY
  scsi: qla2xxx: Remove nvme_done_list
  scsi: qla2xxx: Return busy if rport going away
  scsi: qla2xxx: Fix n2n_ae flag to prevent dev_loss on PDB change
  scsi: qla2xxx: Add FC-NVMe abort processing
  scsi: qla2xxx: Add changes for devloss timeout in driver
  ...
 2018-04-05 15:05:53 -07:00
James Bottomley 2e1f44f6ad Merge branch 'fixes' into misc 
Somewhat nasty merge due to conflicts between "33b28357dd00 scsi:
qla2xxx: Fix Async GPN_FT for FCP and FC-NVMe scan" and "2b5b96473efc
scsi: qla2xxx: Fix FC-NVMe LUN discovery"

Merge is non-trivial and has been verified by Qlogic (Cavium)

Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
 2018-04-03 17:38:39 -07:00
Masanari Iida bc8282a730 treewide: Fix typos in printk 
This patch fixes spelling typos found in printk.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2018-03-27 09:51:22 +02:00
Linus Torvalds 170e07bf6b SCSI fixes on 20180222 
These are mostly fixes for problems with merge window code.  In
 addition we have one doc update (alua) and two dead code removals
 (aiclib and octogon) a spurious assignment removal (csiostor) and a
 performance improvement for storvsc involving better interrupt
 spreading and increasing the command per lun handling.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "These are mostly fixes for problems with merge window code.

  In addition we have one doc update (alua) and two dead code removals
  (aiclib and octogon) a spurious assignment removal (csiostor) and a
  performance improvement for storvsc involving better interrupt
  spreading and increasing the command per lun handling"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qla4xxx: skip error recovery in case of register disconnect.
  scsi: aacraid: fix shutdown crash when init fails
  scsi: qedi: Cleanup local str variable
  scsi: qedi: Fix truncation of CHAP name and secret
  scsi: qla2xxx: Fix incorrect handle for abort IOCB
  scsi: qla2xxx: Fix double free bug after firmware timeout
  scsi: storvsc: Increase cmd_per_lun for higher speed devices
  scsi: qla2xxx: Fix a locking imbalance in qlt_24xx_handle_els()
  scsi: scsi_dh: Document alua_rtpg_queue() arguments
  scsi: Remove Makefile entry for oktagon files
  scsi: aic7xxx: remove aiclib.c
  scsi: qla2xxx: Avoid triggering undefined behavior in qla2x00_mbx_completion()
  scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo()
  scsi: sym53c8xx_2: iterator underflow in sym_getsync()
  scsi: bnx2fc: Fix check in SCSI completion handler for timed out request
  scsi: csiostor: remove redundant assignment to pointer 'ln'
  scsi: ufs: Enable quirk to ignore sending WRITE_SAME command
  scsi: ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info
  scsi: qla2xxx: Fix memory corruption during hba reset test
  scsi: mpt3sas: fix an out of bound write
 2018-02-23 14:09:43 -08:00
Raghava Aditya Renukunta eee549e1e3 scsi: aacraid: Auto detect INTx or MSIx mode during sync cmd processing 
During sync command processing, if legacy INTx status indicates command
is not completed, sample the MSIx register and check if it indicates
command completion, set controller MSIx enabled flag.

Signed-off-by: Prasad B Munirathnam <prasad.munirathnam@microsemi.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-02-13 21:37:04 -05:00
Raghava Aditya Renukunta a5799d74d9 scsi: aacraid: Preserve MSIX mode in the OMR register 
Preserve the current MSIX mode value in the OMR before rewriting the OMR
to initiate the IOP or Soft Reset.

Signed-off-by: Prasad B Munirathnam <prasad.munirathnam@microsemi.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-02-13 21:37:03 -05:00
Raghava Aditya Renukunta 44f1ce7d2f scsi: aacraid: Implement DropIO sync command 
IOP_RESET takes a long time to complete. If controller is in a state
where we can bring it back with init struct, send a DropIO sync command
instead.

 - If controller is faulted perform standard IOP_RESET in aac_srcv_init.

 - If controller is not faulted get adapter properties and extended
   properties.

 - Update the sa_firmware variable and determine if DropIO request is
   supported.

 - Issue DropIO request, and get the number of outstanding commands.

 - If all commands are complete with success (CT_OK), consider IOP_RESET
   is complete.

 - If any commands timeout, Perform the IOP_RESET.

Signed-off-by: Prasad B Munirathnam <prasad.munirathnam@microsemi.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-02-13 21:37:03 -05:00
Meelis Roos 00c20cdc79 scsi: aacraid: fix shutdown crash when init fails 
When aacraid init fails with "AAC0: adapter self-test failed.", shutdown
leads to UBSAN warning and then oops:

[154316.118423] ================================================================================
[154316.118508] UBSAN: Undefined behaviour in drivers/scsi/scsi_lib.c:2328:27
[154316.118566] member access within null pointer of type 'struct Scsi_Host'
[154316.118631] CPU: 2 PID: 14530 Comm: reboot Tainted: G        W        4.15.0-dirty #89
[154316.118701] Hardware name: Hewlett Packard HP NetServer/HP System Board, BIOS 4.06.46 PW 06/25/2003
[154316.118774] Call Trace:
[154316.118848]  dump_stack+0x48/0x65
[154316.118916]  ubsan_epilogue+0xe/0x40
[154316.118976]  __ubsan_handle_type_mismatch+0xfb/0x180
[154316.119043]  scsi_block_requests+0x20/0x30
[154316.119135]  aac_shutdown+0x18/0x40 [aacraid]
[154316.119196]  pci_device_shutdown+0x33/0x50
[154316.119269]  device_shutdown+0x18a/0x390
[...]
[154316.123435] BUG: unable to handle kernel NULL pointer dereference at 000000f4
[154316.123515] IP: scsi_block_requests+0xa/0x30

This is because aac_shutdown() does

        struct Scsi_Host *shost = pci_get_drvdata(dev);
        scsi_block_requests(shost);

and that assumes shost has been assigned with pci_set_drvdata().

However, pci_set_drvdata(pdev, shost) is done in aac_probe_one() far
after bailing out with error from calling the init function
((*aac_drivers[index].init)(aac)), and when the init function fails, no
error is returned from aac_probe_one() so PCI layer assumes there is
driver attached, and tries to shut it down later.

Fix it by returning error from aac_probe_one() when card-specific init
function fails.

This fixes reboot on my HP NetRAID-4M with dead battery.

Signed-off-by: Meelis Roos <mroos@linux.ee>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-02-13 21:35:40 -05:00
Linus Torvalds 28bc6fb959 SCSI misc on 20180131 
This is mostly updates of the usual driver suspects: arcmsr,
 scsi_debug, mpt3sas, lpfc, cxlflash, qla2xxx, aacraid, megaraid_sas,
 hisi_sas.  We also have a rework of the libsas hotplug handling to
 make it more robust, a slew of 32 bit time conversions and fixes, and
 a host of the usual minor updates and style changes.  The biggest
 potential for regressions is the libsas hotplug changes, but so far
 they seem stable under testing.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates of the usual driver suspects: arcmsr,
  scsi_debug, mpt3sas, lpfc, cxlflash, qla2xxx, aacraid, megaraid_sas,
  hisi_sas.

  We also have a rework of the libsas hotplug handling to make it more
  robust, a slew of 32 bit time conversions and fixes, and a host of the
  usual minor updates and style changes. The biggest potential for
  regressions is the libsas hotplug changes, but so far they seem stable
  under testing"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (313 commits)
  scsi: qla2xxx: Fix logo flag for qlt_free_session_done()
  scsi: arcmsr: avoid do_gettimeofday
  scsi: core: Add VENDOR_SPECIFIC sense code definitions
  scsi: qedi: Drop cqe response during connection recovery
  scsi: fas216: fix sense buffer initialization
  scsi: ibmvfc: Remove unneeded semicolons
  scsi: hisi_sas: fix a bug in hisi_sas_dev_gone()
  scsi: hisi_sas: directly attached disk LED feature for v2 hw
  scsi: hisi_sas: devicetree: bindings: add LED feature for v2 hw
  scsi: megaraid_sas: NVMe passthrough command support
  scsi: megaraid: use ktime_get_real for firmware time
  scsi: fnic: use 64-bit timestamps
  scsi: qedf: Fix error return code in __qedf_probe()
  scsi: devinfo: fix format of the device list
  scsi: qla2xxx: Update driver version to 10.00.00.05-k
  scsi: qla2xxx: Add XCB counters to debugfs
  scsi: qla2xxx: Fix queue ID for async abort with Multiqueue
  scsi: qla2xxx: Fix warning for code intentation in __qla24xx_handle_gpdb_event()
  scsi: qla2xxx: Fix warning during port_name debug print
  scsi: qla2xxx: Fix warning in qla2x00_async_iocb_timeout()
  ...
 2018-01-31 11:23:28 -08:00
Raghava Aditya Renukunta cfc350ab0e scsi: aacraid: Delay for rescan worker needs to be 10 seconds 
The delay for the rescan worker needs to 10 seconds, missed the HZ in
there.

Fixes: a1367e4ade (scsi: aacraid: Reschedule host scan in case of failure)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-10 23:25:12 -05:00
Raghava Aditya Renukunta bbd16d96d1 scsi: aacraid: Get correct lun count 
The correct lun count needs to be divided by 24, missed it in the
previous patch set.

Fixes: 4b00022753 (scsi: aacraid: Create helper functions to get lun info)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-10 23:25:11 -05:00
Colin Ian King 9181474464 scsi: aacraid: remove redundant setting of variable c 
A previous commit no longer stores the contents of c, so we now have a
situation where c is being updated but the value is never read. Clean up
the code by removing the now redundant setting of variable c.

Cleans up clang warning:
drivers/scsi/aacraid/aachba.c:943:3: warning: Value stored to 'c' is
never read

Fixes: f4e8708d31 ("scsi: aacraid: Fix udev inquiry race condition")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-08 21:49:09 -05:00
Meelis Roos bef4e68830 scsi: aacraid: Fix driver oops with dead battery 
The battery in my HP NetRAID-4M died of old age, and the aacraid driver
started oopsing with NULL pointer dereference on startup after that.

Fix it by reordering the init sequence to fill in function pointers
before ioremapping memory, or dev->a_ops.adapter_ioremap pointer will be
NULL.

Other subtypes of aacraid seem to have the order already correct.

This was the call trace:

 ? aac_probe_one+0x7a5/0xb30 [aacraid]
 pci_device_probe+0xc0/0x1a0
 driver_probe_device+0x1df/0x3b0
 __driver_attach+0xa9/0xe0
 ? driver_probe_device+0x3b0/0x3b0
 bus_for_each_dev+0x4c/0x90
 driver_attach+0x1d/0x40
 ? driver_probe_device+0x3b0/0x3b0
 bus_add_driver+0x1a7/0x2a0
 driver_register+0x6e/0x130
 __pci_register_driver+0x54/0x90
 ? 0xf81f4000
 aac_init+0x2b/0x1000 [aacraid]
 do_one_initcall+0x45/0x1e0
 ? kfree_skbmem+0x74/0xa0
 ? kfree+0x16d/0x240
 ? kvfree+0x45/0x50
 ? kvfree+0x45/0x50
 ? __vunmap+0x99/0x120
 ? do_init_module+0x1a/0x245
 do_init_module+0x83/0x245
 load_module+0x2764/0x34a0
 ? kernel_read_file+0x150/0x320
 SyS_finit_module+0x82/0xa0
 do_fast_syscall_32+0xba/0x340

Signed-off-by: Meelis Roos <mroos@linux.ee>
Reviewed-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-04 01:03:41 -05:00
Raghava Aditya Renukunta 1cdb74b80f scsi: aacraid: Update driver version to 50877 
Update driver Version to 50877

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta e51c4d703d scsi: aacraid: Remove AAC_HIDE_DISK check in queue command 
Earlier driver would scan throgh all supported buses and targets and add
devices that responded. It would add devices that were _hidden_ by the fw.
Driver would invalidate commands sent to _hidden_ devices via the
AAC_HIDE_DISK check.

Since the driver now adds only the devices that are supposed to be
exposed, this code can be removed.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 75be67cd15 scsi: aacraid: Remove unused rescan variable 
Remove unused rescan variable.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta fe5237590b scsi: aacraid: Skip schedule rescan in case of kdump 
There is a chance of the driver to be stuck in kdump if drives start
acting up in kdump discovery process and the kernel decides to send eh
resets, which would prompt rescan to be scheduled.

Do not perform a rescan in kdump context, since we do not expect a hotplug
event during kdump and all the devices are going to go away anyway.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 8a30e50b72 scsi: aacraid: Fix hang while scanning in eh recovery 
Add back the ability to scan for hotplug changes while eh was in progress.

Schedule a rescan for a later time in the eh recovery code and wait for
eh to complete in the rescan worker.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta a1367e4ade scsi: aacraid: Reschedule host scan in case of failure 
If the driver fails to retrieve information from the fw (could happen when
the fw is not fully in its senses), the driver does nothing and change is
not processed correctly by the driver

Schedule host rescan in case of failure. This is only for SAFW, since
the information retrieval failure will happen on SAFW devices.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 8ebaa67fc2 scsi: aacraid: Use hotplug handling function in place of scsi_scan_host 
Driver uses scsi_scan_host to add new devices in the driver init path,
which adds all the fw exposed devices. The drivers resorts to queue
command checks to block out commands to _hidden_ devices.

Use the hotplug handler code to add new devices during driver init and
other areas, this is only for safw. For ARC scsi_scan_host will still
apply.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 3395614e48 scsi: aacraid: Block concurrent hotplug event handling 
Currently driver will attempt to process hotplug events concurrently based
on the FW interrupt.

Protect safw update function with a scan mutex.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 6f44a22b2c scsi: aacraid: Merge adapter setup with resolve luns 
The device hotplug events are processed only after retrieving the updated
lun information from the fw. Does not make sense to keep them separate.

Merge both the hotplug handling and safw adapter setup code into single
function.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 3031c6565f scsi: aacraid: Refactor resolve luns code and scsi functions 
Resolve luns checks the if a sdev is already present in the os to figure
out if it needs to be removed. Internally the driver exposes HBA on bus
2 even though its bus 1 in the fw. Its mildly confusing.

Refactor out the sdev lookup into its function to check if sdev has been
added to the kernel or not. Add helper functions to add, remove and put
devices based on their fw bus and target number.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 2290678fed scsi: aacraid: Added macros to help loop through known buses and targets 
Added macros to loop through the MAX SUPPORTED Buses and Targets. This
will make the code a bit easier to read.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta f2d2cabadb scsi: aacraid: Process hba and container hot plug events in single function 
The hotplug handler code is duplicated for hba handling and container
handling.

Merged function to handle hba and container hot plug events into the
resolve luns functions. Added a bunch of helper functions to check the
validity of a given target and to check if bus, target is container
device.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 1d1fec53dc scsi: aacraid: Merge func to get container information 
Merge aac_get_containers to setup target function, so that information
about all the present devices can be retrieved in one shot.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 0bcb45fb20 scsi: aacraid: Add helper function to set queue depth 
Add helper function to set queue depth from information retrieved from
the bmic phy structure.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta e2ee8c9480 scsi: aacraid: Save bmic phy information for each phy 
Save the bmic information for each phy, so that it can processed in
target setup function.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 4b00022753 scsi: aacraid: Create helper functions to get lun info 
Created inline function to retrieve lun info for each device from the
phy luns structure.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta a25b6ca1a9 scsi: aacraid: Move function around to match existing code 
Move the function to get phy luns information to the top of function
to set target information

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 3edfb8b2e2 scsi: aacraid: Untangle targets setup from report phy luns 
Remove function call to process targets from the report phy luns function
and make it a function in its own right. This will help understand the
flow of the code.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta fc0fdd9abc scsi: aacraid: Add target setup helper function 
Add helper function to setup targets devices and create the base for the
upcoming patches

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta b5a475e944 scsi: aacraid: Refactor and rename to make mirror existing changes 
Rename variables and functions to make bmic identify, report phy luns
to make them consistent across code internal existing code bases

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 5480aa1837 scsi: aacraid: Change phy luns function to use common bmic function 
Edit function that retrieves phy lun information to use common
bmic function

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 8fb391827f scsi: aacraid: Create bmic submission function from bmic identify 
safw command submission is duplicated across many functions.

Move the safw submission code from bmic identify into its own function
for common use

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 216ced02fa scsi: aacraid: Move code to wait for IO completion to shutdown func 
Ideally driver needs to wait for IO to be submitted or responded to before
shutdown.

Move code to wait for IO completion into shutdown path

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 97a4e8ac3f scsi: aacraid: Refactor reset_host store function 
Refactored the reset_host store function to make consistent across code
bases

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta d1471eb0fa scsi: aacraid: Allow reset_host sysfs var to recover Panicked Fw 
It is possible to restart the controller via the use of the reset_host
sysfs variable. This does work for controllers that can no longer respond,
since driver will attempt to send down a shutdown in this path.

Check if the controller is able to receive commands before sending down
a shutdown

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta f3a2327725 scsi: aacraid: Fix ioctl reset hang 
Driver would hang when attempting to send reset from the ioctl interface,
since it would wait to retrieve the ioctl mutex at send shutdown.

Set adapter shutdown and unlock mutex before sending down reset request.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta 95900629fa scsi: aacraid: Do not remove offlined devices 
As part of the recovery process, the drivers removes offline devices (
done by the kernel) and then tries to add them back in the rescan code.
Removing the device is like taking a sledgehammer to a nail.

Set the device as running if it is marked offline.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta c5313ae8e4 scsi: aacraid: Fix hang in kdump 
Driver attempts to perform a device scan and device add after coming out
of reset. At times when the kdump kernel loads and it tries to perform
eh recovery, the device scan hangs since its commands are blocked because
of the eh recovery. This should have shown up in normal eh recovery path
(Should have been obvious)

Remove the code that performs scanning.I can live without the rescanning
support in the stable kernels but a hanging kdump/eh recovery needs to be
fixed.

Fixes: a2d0321dd5 (scsi: aacraid: Reload offlined drives after controller reset)
Cc: <stable@vger.kernel.org>
Reported-by: Douglas Miller <dougmill@linux.vnet.ibm.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Fixes: a2d0321dd5 (scsi: aacraid: Reload offlined drives after controller reset)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta dfb92a1f93 scsi: aacraid: Do not attempt abort when Fw panicked 
Check if the adapter can receive abort requests, before sending aborts

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta f4e8708d31 scsi: aacraid: Fix udev inquiry race condition 
When udev requests for a devices inquiry string, it might create multiple
threads causing a race condition on the shared inquiry resource string.

Created a buffer with the string for each thread.

Cc: <stable@vger.kernel.org>
Fixes: 3bc8070fb7 ([SCSI] aacraid: SMC vendor identification)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2018-01-03 23:26:41 -05:00
Prasad B Munirathnam 5771cfffdf scsi: aacraid: Fix I/O drop during reset 
"FIB_CONTEXT_FLAG_TIMEDOUT" flag is set in aac_eh_abort to indicate
command timeout. Using the same flag in reset handler causes the command
to time out and the I/Os were dropped.

Define a new flag "FIB_CONTEXT_FLAG_EH_RESET" to make sure I/O is
properly handled in eh_reset handler.

[mkp: tweaked commit message]

Signed-off-by: Prasad B Munirathnam <prasad.munirathnam@microsemi.com>
Reviewed-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 2017-12-14 22:34:28 -05:00