Nick and I had already been looking at drivers/scsi/{sg.c,st.c},
brought there by __put_page in sg.c's peculiar sg_rb_correct4mmap,
which we'd like to remove. But that's irrelevant to your pain, except...
One extract from the patches I'd like to send Doug and Kai for 2.6.15
or 2.6.16 is this below: since the incomplete get_user_pages path omits
to reset res, but has already released all the pages, it will result in
premature freeing of user pages, and behaviour just like you've seen.
Though I'd have thought incomplete get_user_pages was an exceptional
case, and a bit surprised you'd encounter it. Perhaps there's some
other premature freeing in the driver, and this instance has nothing
whatever to do with it.
If the problem were easily reproducible, it'd be great if you could
try this patch; but I think you've said it's not :-(
Signed-off-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Syncronization for Domain Validation workqueue and the initiation of the
alternate controller. Its possible that dv could be terminated if the
workqueue on the 1st channel doesn complete in time before the 2nd channel
begins initialization.
Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Enabling these features causes problems with some drives, so disable
them until they're debugged
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Change return code in slave_alloc to avoid irritating error message from
scsi_alloc_sdev() when scsi stack tries target scan.
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Don't check link down payload in case of firmware update.
Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com>
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fixed various problems in opening sequence of adapters which was previously
changed with NPIV support:
o corrected handling when exchange port data function is not supported,
otherwise adapters on z900 cannot be opened anymore
o corrected setup of timer for exchange port data if called from error
recovery
o corrected check of return code of exchange config data
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Move initialization of locks and lists to adapter allocation function.
Otherwise we might end up with some uninitialized locks, like e.g. the
erp locks which only will be inititialized if an error recovery thread
for an adapter will be started.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Received from Mark Salyzyn.
scsi_bios_ptable return value is not being checked in aac_biosparm.
Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Some SCSI devices apparently get very confused if we try to use the
echo buffer on a non-DT negotiated bus (this mirrors the problems of
using PPR on non-LVD for some devices). The fix is to be far more
conservative about when we use an echo buffer. With this patch, we'll
now see what parameters are negotiated by the read only test, and only
look for an echo buffer if DT is negotiated.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
To transport scsi reset command to device aic7xxx reset handler looks
at the driver's pending_list and searches any proper command. However
the search condition has been inverted: ahc_match_scb() returns TRUE
if a matched command is found. As a result the reset on required
devices did not turn out well, a correctly working neighbour device
may be surprised by the reset. aic7xxx reset handler reports about the
success, but really the original situation is not corrected yet.
Signed-off-by: Vasily Averin <vvs@sw.ru>
Naturally, there's a corresponding problem in the aic79xx driver, so
I've also added the same fix for that.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The Coverity checker spotted this obvious use-after-release bug caused
by a wrong order of the cleanups.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In __rpc_purge_upcall (net/sunrpc/rpc_pipe.c), the newer code to clean up
the in_upcall list has a typo.
Thanks to Vince Busam <vbusam@google.com> for spotting this!
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
In cases where the server has gone insane, nfs_update_inode() may end
up calling nfs_invalidate_inode(), which again calls stuff that takes
the inode->i_lock that we're already holding.
In addition, given the sort of things we have in NFS these days that
need to be cleaned up on inode release, I'm not sure we should ever
be calling make_bad_inode().
Fix up spinlock recursion, and limit nfs_invalidate_inode() to clearing
the caches, and marking the inode as being stale.
Thanks to Steve Dickson <SteveD@redhat.com> for spotting this.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
When caching locks due to holding a file delegation, we must always
check against local locks before sending anything to the server.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Blah. The patch [0] I recently sent fixing errors with
in_hugepage_area() and prepare_hugepage_range() for powerpc itself has
an off-by-one bug. Furthermore, the related functions
touches_hugepage_*_range() and within_hugepage_*_range() are also
buggy. Some of the bugs, like those addressed in [0] originated with
commit 7d24f0b8a5 where we tweaked the
semantics of where hugepages are allowed. Other bugs have been there
essentially forever, and are due to the undefined behaviour of '<<'
with shift counts greater than the type width (LOW_ESID_MASK could
return non-zero for high ranges with the right congruences).
The good news is that I now have a testsuite which should pick up
things like this if they creep in again.
[0] "powerpc-fix-for-hugepage-areas-straddling-4gb-boundary"
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
With the removal of include/asm-powerpc, we no longer need
arch/powerpc/include/asm for the 64 bit build. We also do not need
-Iarch/powerpc for the 64 bit build either.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
its queue of IO completion callbacks, thus creating the deadlock between
umount and xfslogd. Breaking the loop solves the problem.
SGI-PV: 943821
SGI-Modid: xfs-linux-melb:xfs-kern:202363a
Signed-off-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This code fixes a tiny problem with the recent fbcon rotation changes:
fb_prepare_logo doesn't check the return value of fb_find_logo and that
causes a crash for my while booting.
Obvious & working & tested fix is here.
Signed-off-by: Jasper Spaans <jasper@vs19.net>
Acked-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A fix for a locking bug which is triggered when a client tries to lock with
flag DMA_QUIESCENT (typically the X server), but gets interrupted by a signal.
The locking IOCTL should then return an error, but if DMA_QUIESCENT succeeds
it returns 0, and the client falsely thinks it has the lock. In addition
The client waits for DMA_QUISCENT and possibly DMA_READY without having the lock.
From: Thomas Hellstrom
Signed-off-by: Dave Airlie <airlied@linux.ie>
remove redundant include
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On Wed, Nov 16, 2005 at 06:34:24PM -0800, Pete Zaitcev wrote:
>On Wed, 16 Nov 2005 23:52:32 +0100, David Hrdeman <david@2gen.com> wrote:
>> usb-storage: waiting for device to settle before scanning
>> Vendor: I0MEGA Model: UMni1GB*IOM2K4 Rev: 1.01
>> Type: Direct-Access ANSI SCSI revision: 02
>> SCSI device sda: 2048000 512-byte hdwr sectors (1049 MB)
>> sda: Write Protect is off
>> sda: Mode Sense: 00 00 00 00
>> sda: assuming drive cache: write through
>> ioctl_internal_command: <8 0 0 0> return code = 8000002
>> : Current: sense key=0x0
>> ASC=0x0 ASCQ=0x0
>> SCSI device sda: 2048000 512-byte hdwr sectors (1049 MB)
>
>I think it's harmless. I saw things like that, and initially I plugged
>them with workarounds like this:
Thanks for the pointer, and yes, it is harmless, but it floods the
console with the messages which hides other (potentially important)
messages...following your example I've made a patch which fixes the
problem.
Signed-off-by: David Hrdeman <david@2gen.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This should fix a suspend/resume issues that appear with OHCI on some
PPC hardware. The PCI layer should doesn't have the hooks needed for
such ASIC-specific hooks (in this case, software clock gating), so
this moves the code to do that into hcd-pci.c ... where it can be
done after the relevant PCI PM state transition (to/from D3).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Moving the PCI-specific parts of the EHCI driver into their own file
created a few issues ... notably on resume paths which (like swsusp)
require re-initializing the controller. This patch:
- Splits the EHCI startup code into run-once HCD setup code and
separate "init the hardware" reinit code. (That reinit code is
a superset of the "early usb handoff" code.)
- Then it makes the PCI init code run both, and the resume code only
run the reinit code.
- It also removes needless pci wrappers around EHCI start/stop methods.
- Removes a byteswap issue that would be seen on big-endian hardware.
The HCD glue still doesn't actually provide a good way to do all this
run-one init stuff in one place though.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This cleans up the recent updates to EHCI PCI support:
- Gets rid of checks for "is this a PCI device", they're no
longer needed since this is now all PCI-only code.
- Reduce log spamming: MWI is only interesting in the atypical
case that it can actually be used.
- Whitespace cleanup, as appropriate for a new file with no
other pending patches.
So other than that minor logging change, no functional updates.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes some bugs in EHCI suspend/resume that joined us over the past
few releases (as usbcore, PCI, pmcore, and other components evolved):
- Removes suspend and resume recursion from the EHCI driver, getting
rid of the USB_SUSPEND special casing.
- Updates the wakeup mechanism to work again; there's a newish usbcore
call it needs to use.
- Provide simpler tests for "do we need to restart from scratch", to
address another case where PCI Vaux was lost. (In this case it was
restoring a swsusp snapshot, but there could be others.)
Un-exports a symbol that was temporarily exported.
A notable change from previous version is that this doesn't move
the spinlock init, so there's still a resume/reinit path bug.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds two new devices to the ftdi_sio driver's device ID
table. The device IDs were supplied by Stefan Nies of KOBIL Systems for
two of their devices using the FTDI chip.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch solves the following problem I've already discovered on the
latest 2.6.15-rc1-git1 kernel:
Nov 13 07:37:28 wrobel kernel: Bad page state at free_hot_cold_page (in process 'motion', page c164e020)
Nov 13 07:37:28 wrobel kernel: flags:0x40000400 mapping:00000000 mapcount:0 count:0
Nov 13 07:37:28 wrobel kernel: Backtrace:
Nov 13 07:37:28 wrobel kernel: [<c0146d86>] bad_page+0x85/0xbe
Nov 13 07:37:28 wrobel kernel: [<c0147629>] free_hot_cold_page+0x54/0x129
Nov 13 07:37:28 wrobel kernel: [<c01598c6>] __vunmap+0xa9/0xfe
Nov 13 07:37:28 wrobel kernel: [<c0154114>] vmalloc_to_page+0x34/0x55
Nov 13 07:37:28 wrobel kernel: [<c0159942>] vfree+0x27/0x35
Nov 13 07:37:28 wrobel kernel: [<f8a20292>] sn9c102_release_buffers+0x30/0x3f [sn9c102]
Nov 13 07:37:28 wrobel kernel: [<f8a231c2>] sn9c102_release+0x37/0xeb [sn9c102]
Nov 13 07:37:28 wrobel kernel: [<c0163e74>] __fput+0xa9/0x1aa
Nov 13 07:37:28 wrobel kernel: [<c01624f7>] filp_close+0x49/0x6d
Nov 13 07:37:30 wrobel kernel: [<c016258f>] sys_close+0x74/0x95
Nov 13 07:37:30 wrobel kernel: [<c0102ef9>] syscall_call+0x7/0xb
Nov 13 07:37:31 wrobel kernel: Trying to fix it up, but a reboot is needed
Signed-off-by: Damian Wrobel <dwrobel@ertel.com.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The DBG() call where updated with the appropriate KERN_* symbol.
Signed-off-by: Daniel Marjamki <daniel.marjamaki@comhem.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When attempting to hotadd a PCI card with a bridge on it, I saw
the kernel reporting resource collision errors even when there were
really no collisions. The problem is that the code doesn't skip
over "invalid" resources with their resource type flag not set.
Others have reported similar problems at boot time and for
non-bridge PCI card hotplug too, where the code flags a
resource collision for disabled ROMs. This patch fixes both
problems.
Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Per the PCI Express spec, the power-fault-detected bit in the
slot status register can be set anytime hardware detects a power
fault, regardless of whether the slot has a device populated in
it or not. This bit is sticky and must be explicitly cleared.
This patch is needed to allow hot-add after such a power fault
has been detected.
Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Modified common.c so it's using the appropriate KERN_* in printk() calls.
Signed-off-by: Daniel Marjamkia <daniel.marjamaki@comhem.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Trivial patch to report both hdaps axises to the joystick device, not
just the X axis.
Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix a bug where setting the low fan speed limits will not work if no
data was ever read through the sysfs interface and the fan clock
dividers have not been explicitely set yet either. The reason is that
data->fan_div[nr] may currently be used before it is initialized from
the chip register values. The fix is to explicitely initialize
data->fan_div[nr] before using it.
Bug reported, and fix tested, by Nicolas Mailhot.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Hugh Dickins