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Bryan O'Donoghue 3dfe8aaaee greybus: loopback: convert loopback wake/sleep to a waitqueue 
Current code will incrementally poll for gb->type == 0 and sleep.
This type of polling strategy wastes cycles.

This patch changes the sleep strategy by introducing a wait-queue which
waits for gb->type != 0 or kthread_should_stop() to wake-up and work or
to wake-up and terminate.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
History 2015-07-24 16:18:35 -07:00
drivers/staging/greybus greybus: loopback: convert loopback wake/sleep to a waitqueue 2015-07-24 16:18:35 -07:00