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

[SCSI] sd: Implement support for WRITE SAME

2012-11-14T06:45:42Z

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

2012-11-14T05:11:31Z

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

2012-10-24T22:00:11Z

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

2012-09-26T21:13:19Z

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

2012-09-26T21:13:19Z

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

2012-09-25T22:32:23Z

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

2012-09-25T22:32:23Z

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.

2012-09-25T22:32:23Z

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

USB: uas: fix task management

2012-09-25T22:32:23Z

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

2012-09-25T22:32:23Z

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