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authorTomas Winkler <[email protected]>2015-07-08 00:22:03 +0300
committerLinus Torvalds <[email protected]>2015-07-07 15:04:12 -0700
commit4f273959b850569253299987eee611927f048de7 (patch)
tree384abc27b134c3570ad8bcc7b6461e4128e7ed6a /tools/perf/scripts/python/call-graph-from-postgresql.py
parentc7e9ad7da219cf3f8a7cc45eb1c02fdd91199e8d (diff)
mei: nfc: fix deadlock on shutdown/suspend path
In function mei_nfc_host_exit mei_cl_remove_device cannot be called under the device mutex as device removing flow invokes the device driver remove handler that calls in turn to mei_cl_disable_device which naturally acquires the device mutex. Also remove mei_cl_bus_remove_devices which has the same issue, but is never executed as currently the only device on the mei client bus is NFC and a new device cannot be easily added till the bus revamp is completed. This fixes regression caused by commit be9b720a0ccb ("mei_phy: move all nfc logic from mei driver to nfc") Prior to this change the nfc driver remove handler called to no-op disable function while actual nfc device was disabled directly from the mei driver. Reported-by: Linus Torvalds <[email protected]> Acked-by: Greg Kroah-Hartman <[email protected]> Cc: Samuel Ortiz <[email protected]> Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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