linux.git/drivers/usb/storage, branch v3.7

[SCSI] sd: Implement support for WRITE SAME

2012-11-14T06:45:42+00:00

Implement support for WRITE SAME(10) and WRITE SAME(16) in the SCSI disk
driver.

 - We set the default maximum to 0xFFFF because there are several
   devices out there that only support two-byte block counts even with
   WRITE SAME(16). We only enable transfers bigger than 0xFFFF if the
   device explicitly reports MAXIMUM WRITE SAME LENGTH in the BLOCK
   LIMITS VPD.

 - max_write_same_blocks can be overriden per-device basis in sysfs.

 - The UNMAP discovery heuristics remain unchanged but the discard
   limits are tweaked to match the "real" WRITE SAME commands.

 - In the error handling logic we now distinguish between WRITE SAME
   with and without UNMAP set.

The discovery process heuristics are:

 - If the device reports a SCSI level of SPC-3 or greater we'll issue
   READ SUPPORTED OPERATION CODES to find out whether WRITE SAME(16) is
   supported. If that's the case we will use it.

 - If the device supports the block limits VPD and reports a MAXIMUM
   WRITE SAME LENGTH bigger than 0xFFFF we will use WRITE SAME(16).

 - Otherwise we will use WRITE SAME(10) unless the target LBA is beyond
   0xFFFFFFFF or the block count exceeds 0xFFFF.

 - no_write_same is set for ATA, FireWire and USB.

Signed-off-by: Martin K. Petersen 
Reviewed-by: Mike Snitzer 
Reviewed-by: Jeff Garzik 
Signed-off-by: James Bottomley

[SCSI] Add a report opcode helper

2012-11-14T05:11:31+00:00

The REPORT SUPPORTED OPERATION CODES command can be used to query
whether a given opcode is supported by a device. Add a helper function
that allows us to look up commands.

We only issue RSOC if the device reports compliance with SPC-3 or
later. But to err on the side of caution we disable the command for ATA,
FireWire and USB.

Signed-off-by: Martin K. Petersen 
Acked-by: Mike Snitzer 
Signed-off-by: James Bottomley

usb-storage: add unusual_devs entry for Casio EX-N1 digital camera

2012-10-24T22:00:11+00:00

This commit sets removable subclass for Casio EX-N1 digital camera.

The patch has been tested within an ALT Linux kernel:
http://git.altlinux.org/people/led/packages/?p=kernel-image-3.0.git;a=commitdiff;h=c0fd891836e89fe0c93a4d536a59216d90e4e3e7

See also https://bugzilla.kernel.org/show_bug.cgi?id=49221

Signed-off-by: Oleksandr Chumachenko 
Signed-off-by: Michael Shigorin 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

USB: uas: fix gcc warning

2012-09-26T21:13:19+00:00

Streamline control flow so it is easier for gcc to follow which paths
can be taken and which can't.

Fixes "warning: 'cmdinfo' may be used uninitialized in this function"

Signed-off-by: Gerd Hoffmann 
Reported-by: Fengguang Wu 
Signed-off-by: Greg Kroah-Hartman

USB: uas: fix locking

2012-09-26T21:13:19+00:00

Forgot to unlock in the uas_eh_task_mgmt error paths.

Signed-off-by: Gerd Hoffmann 
Reported-by: Fengguang Wu 
Signed-off-by: Greg Kroah-Hartman

USB: uas: add locking

2012-09-25T22:32:23+00:00

Add spinlock to protect uas data structures.

[ v2: s/GFP_NOIO/GFP_ATOMIC/, better don't sleep when holding a spinlock ]

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Greg Kroah-Hartman

USB: uas: fix abort

2012-09-25T22:32:23+00:00

Properly report aborted commands.
Also don't access cmdinfo after kicking task management,
it may not be valid any more once it returns.

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Greg Kroah-Hartman

USB: uas: remove aborted field, replace with status bit.

2012-09-25T22:32:23+00:00

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Greg Kroah-Hartman

USB: uas: fix task management

2012-09-25T22:32:23+00:00

Allocate one tag for task management functions and
use it properly.

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Greg Kroah-Hartman

USB: uas: keep track of command urbs

2012-09-25T22:32:23+00:00

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Greg Kroah-Hartman