On Tue, Jun 12, 2012 at 10:56:09PM +0200, Laurent Pinchart wrote:

The MMC_SLEEP_AWAKE and SD_IO_SEND_OP_COND commands share the same
opcode. SD_IO_SEND_OP_COND isn't supported by the SH MMCIF, but
MMC_SLEEP_AWAKE is. Discriminate between the two commands using the
command flags, and reject SD_IO_SEND_OP_COND only.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/mmc/host/sh_mmcif.c |   14 ++++----------
 1 files changed, 4 insertions(+), 10 deletions(-)

Not supporting the MMC_SLEEP_AWAKE command makes system suspend fail if an MMC
or eMMC device supporting sleep/wake is connected. The issue has been first
noticed on the Armadillo 800 EVA board.

Hi Laurent,

Do you have a test-case for this?
Also, did you check to make sure that the Mackerel still works?