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authorKeith Busch <keith.busch@intel.com>2015-06-05 10:30:08 -0600
committerJens Axboe <axboe@fb.com>2015-06-05 10:30:08 -0600
commit4cc06521ee1f153e0d292413a5bff7bbbdee92d0 (patch)
treedc984fc9b1a477b77f072271a9630b35b7dbdd58 /drivers/clocksource
parent8b70f45e2eb275da886b9c9dee190436d12d876a (diff)
NVMe: add sysfs and ioctl controller reset
We need the ability to perform an nvme controller reset as discussed on the mailing list thread: http://lists.infradead.org/pipermail/linux-nvme/2015-March/001585.html This adds a sysfs entry that when written to will reset perform an NVMe controller reset if the controller was successfully initialized in the first place. This also adds locking around resetting the device in the async probe method so the driver can't schedule two resets. Signed-off-by: Keith Busch <keith.busch@intel.com> Cc: Brandon Schultz <brandon.schulz@hgst.com> Cc: David Sariel <david.sariel@pmcs.com> Updated by Jens to: 1) Merge this with the ioctl reset patch from David Sariel. The ioctl path now shares the reset code from the sysfs path. 2) Don't flush work if we fail issuing the reset. Signed-off-by: Jens Axboe <axboe@fb.com>
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