mmc: tmio: Check INFO1 for completion during DMA transfer

In case a CRC error occurs during DMA transfer, the transfer completion
flag is not set in TMIO_SD_DMA_INFO1 and the transfer would eventually
time out. The timeout could be very long in case the transfer consists
of a large amount of blocks, the base timeout is 10 seconds and every
block adds 100 us more.

In case a CRC error does occur, a completion flag is set in a different
register, TMIO_SD_INFO1. Use this other completion flag to detect DMA
transfer ended and stop waiting for TMIO_SD_DMA_INFO1 completion flag.
This reduces the lengthy timeout in case of an error. The unconditional
check of TMIO_SD_DMA_INFO2 register for DMA related errors must not be
skipped in any case to actually recognize the DMA error and report it.

Signed-off-by: Marek Vasut <[email protected]>
Reviewed-by: Paul Barker <[email protected]>
Tested-by: Paul Barker <[email protected]>
Reviewed-by: Jaehoon Chung <[email protected]>

0 files changed, 0 insertions, 0 deletions