tree 686b60dc3e1695d3e2a53308bd8dd5b9e8d35c41
parent bb5cba40dc7f079ea7ee3ae760b7c388b6eb5fc3
author Ulf Hansson <ulf.hansson@linaro.org> 1389361902 +0100
committer Chris Ball <chris@printf.net> 1393170077 -0500

mmc: mmci: Handle CMD irq before DATA irq

In case of a read operation both MCI_CMDRESPEND and MCI_DATAEND can be
set in the status register when entering the interrupt handler. This is
due to that the card start sending data before the host has
acknowledged the command response.

To resolve the issue for this scenario, we must start by handling the
CMD irq instead of the DATA irq. The reason is beacuse the completion
of the DATA irq will not respect the current command and then causing
it to be garbled.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Johan Rudholm <jrudholm@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>