Commit Graph

9 Commits

Author SHA1 Message Date
Tushar Behera 03ea83e9a3 NVMe: Use kzalloc instead of kmalloc+memset
Use kzalloc instead of kmalloc and a susbsequent memset.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-06-19 13:24:27 -04:00
Vishal Verma 710a143dd8 NVMe: Fix a signedness bug in nvme_trans_modesel_get_mp
nvme_trans_modesel_get_mp() was defined with a unsigned return
type, but can return signed values.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-05-17 09:10:38 -04:00
Sachin Kamat 76e0310c2d NVMe: Remove redundant version.h header include
version.h header inclusion is not necessary as detected by
checkversion.pl.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-05-17 09:10:05 -04:00
Matthew Wilcox ab3ea5bf37 NVMe: Simplify Firmware Activate code slightly
Add definitions for the three Firmware Activate actions, and change the
SCSI translation code to construct the command into a temporary variable
instead of translating the endianness back-and-forth.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@linux.intel.com>
2013-05-08 09:55:05 -04:00
Keith Busch ec50373350 NVMe: Add scsi unmap to SG_IO
Translates a scsi unmap request from SG_IO ioctl to NVMe
data-set-management deallocate.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Acked-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-05-02 14:32:08 -04:00
Keith Busch 14385de117 NVMe: queue usage fixes in nvme-scsi
Fixes nvme queue usages in scsi-to-nvme translation code to not get
a queue more often than it is being put, and not use the queue in an
unsafe way without it being locked.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Acked-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-05-02 14:30:53 -04:00
Vishal Verma 8741ee4cb6 NVMe: Fix sparse warnings in scsi emulation
Sparse produced warnings for some instances of
mismatched types and direct userspace dereferences.
This patch fixes those for the scsi emulation layer.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-04-16 15:14:09 -04:00
Matthew Wilcox 063cc6d559 NVMe: Abstract out sector to block number conversion
Introduce nvme_block_nr() to help convert sectors to block numbers.
This fixes an integer overflow in the SCSI conversion layer, and it's
slightly less typing than opencoding it.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Acked-by: Keith Busch <keith.busch@intel.com>
2013-04-16 15:05:22 -04:00
Vishal Verma 5d0f6131a7 NVMe: Add nvme-scsi.c
Translates SCSI commands in SG_IO ioctl to NVMe commands.
Uses the scsi-nvme translation spec from nvmexpress.org as reference.

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2013-03-28 14:50:49 -04:00