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Commit ea15ba5c authored by Wolfgang Muees's avatar Wolfgang Muees Committed by Pierre Ossman
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mmc_spi: wait more bytes for card response 



Some cards are slower than the standard allows and need more
time to respond to a command. Max. observed number of bytes
was 12.

Signed-off-by: default avatarWolfgang Muees <wolfgang.mues@auerswald.de>
Acked-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 48881cae

drivers/mmc/host/mmc_spi.c

+4 −1
Original line number Diff line number Diff line
@@ -279,8 +279,11 @@ static int mmc_spi_response_get(struct mmc_spi_host *host, 
		 * so it can always DMA directly into the target buffer.

		 * It'd probably be better to memcpy() the first chunk and

		 * avoid extra i/o calls...

		 *

		 * Note we check for more than 8 bytes, because in practice,

		 * some SD cards are slow...

		 */

		for (i = 2; i < 9; i++) {

		for (i = 2; i < 16; i++) {

			value = mmc_spi_readbytes(host, 1);

			if (value < 0)

				goto done;