linux.git/drivers/block, branch v3.0.46

aoe: assert AoE packets marked as requiring no checksum

2012-10-12T20:28:08+00:00

[ Upstream commit 8babe8cc6570ed896b7b596337eb8fe730c3ff45 ]

In order for the network layer to see that AoE requires
no checksumming in a generic way, the packets must be
marked as requiring no checksum, so we make this requirement
explicit with the assertion.

Signed-off-by: Ed Cashin 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

cciss: fix handling of protocol error

2012-10-02T16:47:23+00:00

commit 2453f5f992717251cfadab6184fbb3ec2f2e8b40 upstream.

If a command completes with a status of CMD_PROTOCOL_ERR, this
information should be conveyed to the SCSI mid layer, not dropped
on the floor.  Unlike a similar bug in the hpsa driver, this bug
only affects tape drives and CD and DVD ROM drives in the cciss
driver, and to induce it, you have to disconnect (or damage) a
cable, so it is not a very likely scenario (which would explain
why the bug has gone undetected for the last 10 years.)

Signed-off-by: Stephen M. Cameron 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

cciss: fix incorrect scsi status reporting

2012-09-14T17:00:39+00:00

commit b0cf0b118c90477d1a6811f2cd2307f6a5578362 upstream.

Delete code which sets SCSI status incorrectly as it's already been set
correctly above this incorrect code.  The bug was introduced in 2009 by
commit b0e15f6db111 ("cciss: fix typo that causes scsi status to be
lost.")

Signed-off-by: Stephen M. Cameron 
Reported-by: Roel van Meer 
Tested-by: Roel van Meer 
Cc: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

umem: fix up unplugging

2012-07-16T15:47:51+00:00

commit 32587371ad3db2f9d335de10dbd8cffd4fff5669 upstream.

Fix a regression introduced by 7eaceaccab5f40 ("block: remove per-queue
plugging").  In that patch, Jens removed the whole mm_unplug_device()
function, which used to be the trigger to make umem start to work.

We need to implement unplugging to make umem start to work, or I/O will
never be triggered.

Signed-off-by: Tao Guo 
Cc: Neil Brown 
Cc: Jens Axboe 
Cc: Shaohua Li 
Cc: 
Acked-by: NeilBrown 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

cciss: Fix scsi tape io with more than 255 scatter gather elements

2012-04-22T23:21:24+00:00

commit bc67f63650fad6b3478d9ddfd5406d45a95987c9 upstream.

The total number of scatter gather elements in the CISS command
used by the scsi tape code was being cast to a u8, which can hold
at most 255 scatter gather elements.  It should have been cast to
a u16.  Without this patch the command gets rejected by the controller
since the total scatter gather count did not add up to the right
value resulting in an i/o error.

Signed-off-by: Stephen M. Cameron 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

cciss: Initialize scsi host max_sectors for tape drive support

2012-04-22T23:21:24+00:00

commit 395d287526bb60411ff37b19ad9dd38b58ba8732 upstream.

The default is too small (1024 blocks), use h->cciss_max_sectors (8192 blocks)
Without this change, if you try to set the block size of a tape drive above
512*1024, via "mt -f /dev/st0 setblk nnn" where nnn is greater than 524288,
it won't work right.

Signed-off-by: Stephen M. Cameron 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

block, sx8: fix pointer math issue getting fw version

2012-03-19T15:57:58+00:00

commit ea5f4db8ece896c2ab9eafa0924148a2596c52e4 upstream.

"mem" is type u8.  We need parenthesis here or it screws up the pointer
math probably leading to an oops.

Signed-off-by: Dan Carpenter 
Acked-by: Jeff Garzik 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

block: add and use scsi_blk_cmd_ioctl

2012-01-26T01:24:54+00:00

commit 577ebb374c78314ac4617242f509e2f5e7156649 upstream.

Introduce a wrapper around scsi_cmd_ioctl that takes a block device.

The function will then be enhanced to detect partition block devices
and, in that case, subject the ioctls to whitelisting.

Cc: linux-scsi@vger.kernel.org
Cc: Jens Axboe 
Cc: James Bottomley 
Signed-off-by: Paolo Bonzini 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

xen/blkback: Report VBD_WSECT (wr_sect) properly.

2011-11-11T17:37:07+00:00

commit 5c62cb48602dba95159c81ffeca179d3852e25be upstream.

We did not increment the amount of sectors written to disk
b/c we tested for the == WRITE which is incorrect - as the
operations are more of WRITE_FLUSH, WRITE_ODIRECT. This patch
fixes it by doing a & WRITE check.

Reported-by: Andy Burns 
Suggested-by: Ian Campbell 
Signed-off-by: Konrad Rzeszutek Wilk 
Signed-off-by: Greg Kroah-Hartman

cciss: add small delay when using PCI Power Management to reset for kump

2011-11-11T17:36:58+00:00

commit ab5dbebe33e0c353e8545f09c34553ac3351dad6 upstream.

The P600 requires a small delay when changing states. Otherwise we may think
the board did not reset and we bail. This for kdump only and is particular
to the P600.

Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman