mmc_spi: add a status check for spi_sync_locked

In case spi_sync_locked fails, the fix reports the error and
returns the error code upstream.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Kangjie Lu 2019-03-11 00:53:33 -05:00 • committed by Ulf Hansson
commit 611025983b