Bryan O'Donoghue fece9c87cb greybus: Ensure gb->mutex is held when adding timer ... Currently in loopback on the async path we issue an operation and then add a timer to time-out that operation should it fail to complete. Looking at a backtrace given in its feasible op_async->pending can be true and del_timer() can run before add_timer() has run. In the callback handler we already hold gb->mutex. This patch fixes that potential race by ensuring we hold gb->mutex both when we are adding and when we are removing the relevant timer. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reported-and-tested-by: Axel Haslam <ahaslam@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>		2016-03-16 21:49:31 -07:00
drivers/staging/greybus	greybus: Ensure gb->mutex is held when adding timer	2016-03-16 21:49:31 -07:00