Currently when no expected completion condition occures in the mmc_send_cmd while loop that is waiting for a data transfer to complete the MMC driver just hangs. This patch adds an arbitrary 2 second timeout. If nothing we recognize occures within 2 seconds some diagnostic information is printed and we fail out. Signed-off-by: Anton Staaf <robotboy@chromium.org> Cc: Andy Fleming <afleming@gmail.com> Cc: Tom Warren <twarren@nvidia.com> Cc: Stephen Warren <swarren@nvidia.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net>master
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