linux/drivers/block, branch v3.0.43

cciss: fix incorrect scsi status reporting

2012-09-14T17:00:39Z

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

2012-07-16T15:47:51Z

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

2012-04-22T23:21:24Z

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

2012-04-22T23:21:24Z

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

2012-03-19T15:57:58Z

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

2012-01-26T01:24:54Z

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.

2011-11-11T17:37:07Z

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

2011-11-11T17:36:58Z

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

floppy: use del_timer_sync() in init cleanup

2011-10-03T18:40:36Z

commit 6c4867f6469964e34c5f4ee229a2a7f71a34c7ff upstream. When no floppy is found the module code can be released while a timer function is pending or about to be executed. CPU0 CPU1 floppy_init() timer_softirq() spin_lock_irq(&base->lock); detach_timer(); spin_unlock_irq(&base->lock); -> Interrupt del_timer(); return -ENODEV; module_cleanup(); <- EOI call_timer_fn(); OOPS Use del_timer_sync() to prevent this. Signed-off-by: Carsten Emde Signed-off-by: Thomas Gleixner Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman

xen-blkfront: Fix one off warning about name clash

2011-08-29T20:29:11Z

commit 89153b5cae9f40c224a5d321665a97bf14220c2c upstream. Avoid telling users to use xvde and onwards when using xvde. Acked-by: Stefano Stabellini Signed-off-by: Stefan Bader Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman