[PATCH] MMC: Fix multiblock SDIO transfers in AT91 MCI

[Jean-Christophe PLAGNIOL-VILLARD]

On 12:11 Thu 25 Nov     , Yauhen Kharuzhy wrote:
> The AT91 MCI has special SDIO transfer types: SDIO block and SDIO byte
> transfers, but at91_mci driver doesn't use them and handles all SDIO
> transfers as ordinary MMC block transfers. This causes problems for
> multiple-block SDIO transfers (in particular for 256-bytes blocks).
> 
> Fix this situation by check opcode for SDIO CMD53 and set transfer
> type in AT91_MCI_CMDR register properly.
> 
> This patch was tested with libertas SDIO driver: problem with TX
> timeouts on big packets was eliminated.
> 
> Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy at promwad.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>

Best Regards,
J.