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HID: i2c-hid: add mutex protecting open/close race
authorBenjamin Tissoires <benjamin.tissoires@gmail.com>
Wed, 12 Dec 2012 17:00:02 +0000 (18:00 +0100)
committerJiri Kosina <jkosina@suse.cz>
Wed, 12 Dec 2012 17:26:22 +0000 (18:26 +0100)
commit7a7d6d9c5fcd4b674da38e814cfc0724c67731b2
tree8fdc9bdf269b31a706e20ac0ca1d1f135164c4c8tree | snapshot (tar.gz zip)
parent9afd09a1db93cc9084846c2b9bc0d1194743e5dccommit | diff
HID: i2c-hid: add mutex protecting open/close race

We should not enter close function while someone else is in open.
This mutex prevents this race.

There is also no need to override the ret value with -EIO in case of
a failure of i2c_hid_set_power.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
drivers/hid/i2c-hid/i2c-hid.c diff | blob | blame | history