staging: greybus: loopback: convert loopback to use generic async operations
Loopback has its own internal method for tracking and timing out asynchronous operations however previous patches make it possible to use functionality provided by operation.c to do this instead. Using the code in operation.c means we can completely subtract the timer, the work-queue, the kref and the cringe-worthy 'pending' flag. The completion callback triggered by operation.c will provide an authoritative result code - including -ETIMEDOUT for asynchronous operations. Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Reviewed-by: Johan Hovold <johan@kernel.org> Cc: Alex Elder <elder@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mitch Tasman <tasman@leaflabs.com> Cc: greybus-dev@lists.linaro.org Cc: devel@driverdev.osuosl.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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