Commit Graph

126 Commits

Author SHA1 Message Date
Jiapeng Chong 89863a3b5f net: fddi: skfp: rmt: Clean up some inconsistent indenting
No functional modification involved.

drivers/net/fddi/skfp/rmt.c:236 rmt_fsm() warn: if statement not indented.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4736
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230407034157.61276-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-04-11 12:46:26 +02:00
Yongqiang Liu ae18dcdff0 net: defxx: Fix missing err handling in dfx_init()
When eisa_driver_register() or tc_register_driver() failed,
the modprobe defxx would fail with some err log as follows:

 Error: Driver 'defxx' is already registered, aborting...

Fix this issue by adding err hanling in dfx_init().

Fixes: e89a2cfb7d ("[TC] defxx: TURBOchannel support")
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-09 10:44:27 +00:00
Jilin Yuan 86d2155e48 skfp/h: fix repeated words in comments
Delete the redundant word 'the'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-08-12 11:20:29 +01:00
Jilin Yuan edb2c3476d fddi/skfp: fix repeated words in comments
Delete the redundant word 'test'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-11 14:12:54 +01:00
Tom Rix 2a11fb1d1b net: fddi: skfp: smt: Remove extra parameters to vararg macro
cppcheck reports
[drivers/net/fddi/skfp/smt.c:750]: (warning) printf format string requires 0 parameters but 2 are given.

DB_SBAN is a vararg macro, like DB_ESSN.  Remove the extra args and the nl.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-22 23:05:56 +01:00
Wen Zhiwei b4aadd2073 net:Remove initialization of static variables to 0
Delete the initialization of three static variables
because it is meaningless.

Signed-off-by: Wen Zhiwei <wenzhiwei@kylinos.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-27 14:53:00 +00:00
Yihao Han 311107bdec net: fddi: use swap() to make code cleaner
Use the macro 'swap()' defined in 'include/linux/minmax.h' to avoid
opencoding it.

Signed-off-by: Yihao Han <hanyihao@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-15 14:19:17 +00:00
Jakub Kicinski a0c8c3372b fddi: defza: add missing pointer type cast
hw_addr is a uint AKA unsigned int. dev_addr_set() takes
a u8 *.

  drivers/net/fddi/defza.c:1383:27: error: passing argument 2 of 'dev_addr_set' from incompatible pointer type [-Werror=incompatible-pointer-types]

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 1e9258c389 ("fddi: defxx,defza: use dev_addr_set()")
Acked-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://lore.kernel.org/r/20211025160000.2803818-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-25 10:28:47 -07:00
Jakub Kicinski 2e0566aeb9 fddi: skfp: constify and use dev_addr_set()
Get it ready for constant netdev->dev_addr.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-22 10:16:05 -07:00
Jakub Kicinski 1e9258c389 fddi: defxx,defza: use dev_addr_set()
Commit 406f42fa0d ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Acked-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-22 10:16:03 -07:00
Jakub Kicinski 4d3d2c8dba fddi: use eth_hw_addr_set()
Convert from memcpy(), include is needed.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-02 14:18:26 +01:00
Cai Huoqing 064d0171d7 net: fddi: skfp: Fix a function name in comments
Use dma_map_single() instead of pci_map_single(),
because only dma_map_single() is called here.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-27 12:29:33 +01:00
Cai Huoqing b38bcb41f1 FDDI: defxx: Fix function names in coments
Use dma_xxx_xxx() instead of pci_xxx_xxx(),
because the pci function wrappers are not called here.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-27 12:29:33 +01:00
Christophe JAILLET a3ba7fd1d3 fddi: switch from 'pci_' to 'dma_' API
In [1], Christoph Hellwig has proposed to remove the wrappers in
include/linux/pci-dma-compat.h.

Some reasons why this API should be removed have been given by Julia
Lawall in [2].

A coccinelle script has been used to perform the needed transformation
Only relevant parts are given below.

It has been compile tested.

@@ @@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@ @@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

[1]: https://lore.kernel.org/kernel-janitors/20200421081257.GA131897@infradead.org/
[2]: https://lore.kernel.org/kernel-janitors/alpine.DEB.2.22.394.2007120902170.2424@hadrien/

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-29 10:50:24 +01:00
Arnd Bergmann 043393d8b4 fddi: use ndo_siocdevprivate
The skfddi driver has a private ioctl and passes the data correctly
through ifr_data, but the use of a pointer in s_skfp_ioctl is
broken in compat mode.

Change the driver to use ndo_siocdevprivate and disallow calling
it in compat mode until a conversion handler is added.

Cc: "Maciej W. Rozycki" <macro@orcam.me.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-27 20:11:43 +01:00
Pavel Skripkin deb7178eb9 net: fddi: fix UAF in fza_probe
fp is netdev private data and it cannot be
used after free_netdev() call. Using fp after free_netdev()
can cause UAF bug. Fix it by moving free_netdev() after error message.

Fixes: 61414f5ec9 ("FDDI: defza: Add support for DEC FDDIcontroller 700
TURBOchannel adapter")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-13 09:43:50 -07:00
Hui Tang a597111a3c net: fddi: skfp: remove leading spaces before tabs
There are a few leading spaces before tabs and remove it by running
the following commard:

    $ find . -name '*.[ch]' | xargs sed -r -i 's/^[ ]+\t/\t/'

Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-05-20 15:10:57 -07:00
qhjindev 23c9c2b314 fddi/skfp: fix typo
change 'privae' to 'private'

Signed-off-by: qhjindev <qhjin_dev@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-27 14:07:27 -07:00
Bhaskar Chowdhury 34bb975126 net: fddi: skfp: Mundane typo fixes throughout the file smt.h
Few spelling fixes throughout the file.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 15:42:22 -08:00
Maciej W. Rozycki 4e052626b1 FDDI: defxx: Use driver's name with resource requests
Replace repeated "defxx" strings with a reference to the DRV_NAME macro
and then use the driver's name rather that the bus address with resource
requests so as to have contents of /proc/iomem and /proc/ioports more
meaningful to the user, in line with what drivers usually do.

So rather than say:

5000-50ff : DEC FDDIcontroller/EISA Adapter
  5000-503f : 00:05
  5040-5043 : 00:05
5400-54ff : DEC FDDIcontroller/EISA Adapter
5800-58ff : DEC FDDIcontroller/EISA Adapter
5c00-5cff : DEC FDDIcontroller/EISA Adapter
  5c80-5cbf : 00:05

or:

620c080020000-620c08002007f : 0031:02:04.0
  620c080020000-620c08002007f : 0031:02:04.0
620c080030000-620c08003ffff : 0031:02:04.0

or:

1f100000-1f10003f : tc2

we report:

5000-50ff : DEC FDDIcontroller/EISA Adapter
  5000-503f : defxx
  5040-5043 : defxx
5400-54ff : DEC FDDIcontroller/EISA Adapter
5800-58ff : DEC FDDIcontroller/EISA Adapter
5c00-5cff : DEC FDDIcontroller/EISA Adapter
  5c80-5cbf : defxx

and:

620c080020000-620c08002007f : 0031:02:04.0
  620c080020000-620c08002007f : defxx
620c080030000-620c08003ffff : 0031:02:04.0

and:

1f100000-1f10003f : defxx

respectively for the DEFEA (EISA), DEFPA (PCI), and DEFTA (TURBOchannel)
adapters.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 13:08:15 -08:00
Maciej W. Rozycki 795e272e54 FDDI: defxx: Implement dynamic CSR I/O address space selection
Recent versions of the PCI Express specification have deprecated support
for I/O transactions and actually some PCIe host bridges, such as Power
Systems Host Bridge 4 (PHB4), do not implement them.  Conversely a DEFEA
adapter can have its MMIO decoding disabled with ECU (EISA Configuration
Utility) and therefore not available for us with the resource allocation
infrastructure we implement.

However either I/O address space will always be available for use with
the DEFEA (EISA) and DEFPA (PCI) adapters and both have double address
decoding implemented in hardware for Control and Status Register access.
The two kinds of adapters can be present both at once in a single mixed
PCI/EISA system.  For the DEFTA (TURBOchannel) variant there is no issue
as there has been no port I/O address space defined for that bus.

To make people's life easier and the driver more robust remove the
DEFXX_MMIO configuration option so as to rather than making the choice
for the I/O address space to use at build time for all the adapters
installed in the system let the driver choose the most suitable address
space dynamically on a case-by-case basis at run time.  Make MMIO the
default and resort to port I/O should the default fail for some reason.

This way multiple adapters installed in one system can use different I/O
address spaces each, in particular in the presence of DEFEA adapters in
a pure-EISA or a mixed EISA/PCI system (it is expected that DEFPA boards
will use MMIO in normal circumstances).

The choice of the I/O address space to use continues being reported by
the driver on startup, e.g.:

eisa 00:05: EISA: slot 5: DEC3002 detected
defxx: v1.12 2021/03/10  Lawrence V. Stefani and others
00:05: DEFEA at I/O addr = 0x5000, IRQ = 10, Hardware addr = 00-00-f8-c8-b3-b6
00:05: registered as fddi0

and:

defxx: v1.12 2021/03/10  Lawrence V. Stefani and others
0031:02:04.0: DEFPA at MMIO addr = 0x620c080020000, IRQ = 57, Hardware addr = 00-60-6d-93-91-98
0031:02:04.0: registered as fddi0

and:

defxx: v1.12 2021/03/10  Lawrence V. Stefani and others
tc2: DEFTA at MMIO addr = 0x1f100000, IRQ = 21, Hardware addr = 08-00-2b-b0-8b-1e
tc2: registered as fddi0

so there is no need to add further information.

The change is supposed to cause a negligible performance hit as I/O
accessors will now have code executed conditionally at run time.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 13:08:15 -08:00
Maciej W. Rozycki 193ced4a79 FDDI: defxx: Make MMIO the configuration default except for EISA
Recent versions of the PCI Express specification have deprecated support
for I/O transactions and actually some PCIe host bridges, such as Power
Systems Host Bridge 4 (PHB4), do not implement them.

The default kernel configuration choice for the defxx driver is the use
of I/O ports rather than MMIO for PCI and EISA systems.  It may have
made sense as a conservative backwards compatible choice back when MMIO
operation support was added to the driver as a part of TURBOchannel bus
support.  However nowadays this configuration choice makes the driver
unusable with systems that do not implement I/O transactions for PCIe.

Make DEFXX_MMIO the configuration default then, except where configured
for EISA.  This exception is because an EISA adapter can have its MMIO
decoding disabled with ECU (EISA Configuration Utility) and therefore
not available with the resource allocation infrastructure we implement,
while port I/O is always readily available as it uses slot-specific
addressing, directly mapped to the slot an option card has been placed
in and handled with our EISA bus support core.  Conversely a kernel that
supports modern systems which may not have I/O transactions implemented
for PCIe will usually not be expected to handle legacy EISA systems.

The change of the default will make it easier for people, including but
not limited to distribution packagers, to make a working choice for the
driver.

Update the option description accordingly and while at it replace the
potentially ambiguous PIO acronym with IOP for "port I/O" vs "I/O ports"
according to our nomenclature used elsewhere.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Fixes: e89a2cfb7d ("[TC] defxx: TURBOchannel support")
Cc: stable@vger.kernel.org # v2.6.21+
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 13:08:15 -08:00
Maciej W. Rozycki f626ca6829 FDDI: defxx: Bail out gracefully with unassigned PCI resource for CSR
Recent versions of the PCI Express specification have deprecated support
for I/O transactions and actually some PCIe host bridges, such as Power
Systems Host Bridge 4 (PHB4), do not implement them.

For those systems the PCI BARs that request a mapping in the I/O space
have the length recorded in the corresponding PCI resource set to zero,
which makes it unassigned:

# lspci -s 0031:02:04.0 -v
0031:02:04.0 FDDI network controller: Digital Equipment Corporation PCI-to-PDQ Interface Chip [PFI] FDDI (DEFPA) (rev 02)
	Subsystem: Digital Equipment Corporation FDDIcontroller/PCI (DEFPA)
	Flags: bus master, medium devsel, latency 136, IRQ 57, NUMA node 8
	Memory at 620c080020000 (32-bit, non-prefetchable) [size=128]
	I/O ports at <unassigned> [disabled]
	Memory at 620c080030000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: [50] Power Management version 2
	Kernel driver in use: defxx
	Kernel modules: defxx

#

Regardless the driver goes ahead and requests it (here observed with a
Raptor Talos II POWER9 system), resulting in an odd /proc/ioport entry:

# cat /proc/ioports
00000000-ffffffffffffffff : 0031:02:04.0
#

Furthermore, the system gets confused as the driver actually continues
and pokes at those locations, causing a flood of messages being output
to the system console by the underlying system firmware, like:

defxx: v1.11 2014/07/01  Lawrence V. Stefani and others
defxx 0031:02:04.0: enabling device (0140 -> 0142)
LPC[000]: Got SYNC no-response error. Error address reg: 0xd0010000
IPMI: dropping non severe PEL event
LPC[000]: Got SYNC no-response error. Error address reg: 0xd0010014
IPMI: dropping non severe PEL event
LPC[000]: Got SYNC no-response error. Error address reg: 0xd0010014
IPMI: dropping non severe PEL event

and so on and so on (possibly intermixed actually, as there's no locking
between the kernel and the firmware in console port access with this
particular system, but cleaned up above for clarity), and once some 10k
of such pairs of the latter two messages have been produced an interace
eventually shows up in a useless state:

0031:02:04.0: DEFPA at I/O addr = 0x0, IRQ = 57, Hardware addr = 00-00-00-00-00-00

This was not expected to happen as resource handling was added to the
driver a while ago, because it was not known at that time that a PCI
system would be possible that cannot assign port I/O resources, and
oddly enough `request_region' does not fail, which would have caught it.

Correct the problem then by checking for the length of zero for the CSR
resource and bail out gracefully refusing to register an interface if
that turns out to be the case, producing messages like:

defxx: v1.11 2014/07/01  Lawrence V. Stefani and others
0031:02:04.0: Cannot use I/O, no address set, aborting
0031:02:04.0: Recompile driver with "CONFIG_DEFXX_MMIO=y"

Keep the original check for the EISA MMIO resource as implemented,
because in that case the length is hardwired to 0x400 as a consequence
of how the compare/mask address decoding works in the ESIC chip and it
is only the base address that is set to zero if MMIO has been disabled
for the adapter in EISA configuration, which in turn could be a valid
bus address in a legacy-free system implementing PCI, especially for
port I/O.

Where the EISA MMIO resource has been disabled for the adapter in EISA
configuration this arrangement keeps producing messages like:

eisa 00:05: EISA: slot 5: DEC3002 detected
defxx: v1.11 2014/07/01  Lawrence V. Stefani and others
00:05: Cannot use MMIO, no address set, aborting
00:05: Recompile driver with "CONFIG_DEFXX_MMIO=n"
00:05: Or run ECU and set adapter's MMIO location

with the last two lines now swapped for easier handling in the driver.

There is no need to check for and catch the case of a port I/O resource
not having been assigned for EISA as the adapter uses the slot-specific
I/O space, which gets assigned by how EISA has been specified and maps
directly to the particular slot an option card has been placed in.  And
the EISA variant of the adapter has additional registers that are only
accessible via the port I/O space anyway.

While at it factor out the error message calls into helpers and fix an
argument order bug with the `pr_err' call now in `dfx_register_res_err'.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Fixes: 4d0438e56a ("defxx: Clean up DEFEA resource management")
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 13:08:15 -08:00
Maciej W. Rozycki aa27b8f7a0 FDDI: defza: Update my e-mail address
Following the recent update to MAINTAINERS update my e-mail address.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 12:45:16 -08:00
Maciej W. Rozycki 4d248c0dee FDDI: defxx: Update my e-mail address
Following the recent update to MAINTAINERS update my e-mail address.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 12:45:16 -08:00
Gustavo A. R. Silva 537a0c5c42 net: fddi: skfp: smt: Replace one-element array with flexible-array member
There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].

Refactor the code according to the use of flexible-array members in
smt_sif_operation structure, instead of one-element arrays. Also, make
use of the struct_size() helper instead of the open-coded version
to calculate the size of the struct-with-flex-array. Additionally, make
use of the typeof operator to properly determine the object type to be
passed to macro smtod().

Also, this helps the ongoing efforts to enable -Warray-bounds by fixing
the following warnings:

  CC [M]  drivers/net/fddi/skfp/smt.o
drivers/net/fddi/skfp/smt.c: In function ‘smt_send_sif_operation’:
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */
      |                   ^~~
drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds]
 1084 |    smt_fill_lem(smc,&sif->lem[i],i) ;
      |                      ~~~~~~~~^~~
In file included from drivers/net/fddi/skfp/h/smc.h:42,
                 from drivers/net/fddi/skfp/smt.c:15:
drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’
  767 |  struct smt_p_lem lem[1] ; /* phy lem status */

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/109
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10 12:45:15 -08:00
Lee Jones f40b160db3 net: fddi: skfp: ess: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/ess.c:43:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-20-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:35:15 -08:00
Lee Jones 041f57c79b net: fddi: skfp: drvfbi: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/drvfbi.c:26:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-19-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:34:51 -08:00
Lee Jones 6e5830d629 net: fddi: skfp: srf: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/srf.c:30:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-17-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:34:25 -08:00
Lee Jones e02243ed78 net: fddi: skfp: hwt: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/hwt.c:31:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-16-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:34:11 -08:00
Lee Jones af1fc59467 net: fddi: skfp: smttimer: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smttimer.c:22:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-15-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:34:00 -08:00
Lee Jones ea3588b01e net: fddi: skfp: smtinit: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smtinit.c:23:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-12-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:33:27 -08:00
Lee Jones bc3f7c2b30 net: fddi: skfp: smtdef: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smtdef.c:26:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-11-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:33:18 -08:00
Lee Jones 8adc51b94a net: fddi: skfp: rmt: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/rmt.c:49:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-10-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:33:08 -08:00
Lee Jones 6a60a7a934 net: fddi: skfp: queue: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/queue.c:22:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-9-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:32:52 -08:00
Lee Jones a15420dfe0 net: fddi: skfp: pmf: Remove defined but unused variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/pmf.c:28:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-8-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:32:40 -08:00
Lee Jones b8e6ea2637 net: fddi: skfp: pcmplc: Remove defined but not used variable 'ID_sccs'
Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/pcmplc.c:49:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-4-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:31:25 -08:00
Lee Jones 9745aab8cf net: fddi: skfp: ecm: Remove seemingly unused variable 'ID_sccs'
This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/ecm.c: In function ‘ecm_fsm’:
 drivers/net/fddi/skfp/ecm.c:44:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-3-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:30:52 -08:00
Lee Jones 918895bf61 net: fddi: skfp: ecm: Protect 'if' when AIX_EVENT is not defined
When AIX_EVENT is not defined, the 'if' body will be empty, which
makes GCC complain.  Place bracketing around the invocation to protect
it.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/ecm.c: In function ‘ecm_fsm’:
 drivers/net/fddi/skfp/ecm.c:153:29: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201102114512.1062724-2-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-03 16:30:15 -08:00
Gustavo A. R. Silva 2c956a5ad4 fddi/skfp: Avoid the use of one-element array
One-element arrays are being deprecated[1]. Replace the one-element array
with a simple object of type u_char: 'u_char rm_pad1'[2], once it seems
this is just a placeholder for padding.

[1] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays
[2] https://github.com/KSPP/linux/issues/86

Built-tested-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/5f72c23f.%2FkPBWcZBu+W6HKH4%25lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-29 13:27:43 -07:00
Gustavo A. R. Silva df561f6688 treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-23 17:36:59 -05:00
Lee Jones 81dbf2191f net: fddi: skfp: cfm: Remove seemingly unused variable 'ID_sccs'
This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/cfm.c: In function ‘cfm’:
 drivers/net/fddi/skfp/cfm.c:211:6: warning: variable ‘oldstate’ set but not used [-Wunused-but-set-variable]
 drivers/net/fddi/skfp/cfm.c:40:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-14 20:42:25 -07:00
Lee Jones d1ad06ba7e net: fddi: skfp: cfm: Remove set but unused variable 'oldstate'
While we're at it, remove some code which has never been invoked.

Keep the comment though, as it seems potentially half useful.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/cfm.c: In function ‘cfm’:
 drivers/net/fddi/skfp/cfm.c:211:6: warning: variable ‘oldstate’ set but not used [-Wunused-but-set-variable]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-14 20:42:25 -07:00
Lee Jones 7b1af34f02 net: fddi: skfp: smt: Remove seemingly unused variable 'ID_sccs'
This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smt.c:24:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-14 20:42:25 -07:00
Lee Jones 327afdd7c0 net: fddi: skfp: smt: Place definition of 'smt_pdef' under same stipulations as its use
The variable 'smt_pdef' is only used if LITTLE_ENDIAN is set, so only
define it if this is the case.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smt.c:1572:3: warning: ‘smt_pdef’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-14 20:42:25 -07:00
Lee Jones 026ff46b42 net: fddi: skfp: fplustm: Remove seemingly unused variable 'ID_sccs'
This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/fplustm.c:25:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-14 20:42:25 -07:00
Lee Jones 0d9b56453b net: fddi: skfp: hwmtm: Remove seemingly unused variable 'ID_sccs'
This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/hwmtm.c:14:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-14 20:42:25 -07:00
Tetsuo Handa c19b05b84d net: fddi: skfp: Remove addr_to_string().
kbuild test robot found that addr_to_string() is available only when
DEBUG is defined. And I found that what that function is doing is
what %pM will do. Thus, replace %s with %pM and remove thread-unsafe
addr_to_string() function.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-13 11:49:51 -07:00
Jakub Kicinski 55f35cf79d docs: networking: move FDDI drivers to the hw driver section
Move docs for defza and skfp under device_drivers/fddi.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-26 16:08:45 -07:00
Masahiro Yamada a7f7f6248d treewide: replace '---help---' in Kconfig files with 'help'
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-14 01:57:21 +09:00