From d198f101989d9bb950327f0d043f6203bb862343 Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Fri, 2 Nov 2007 18:21:13 +0100 Subject: mmc_block: check card state after write Some cards have been reported to signal that they're ready prematurely. Checking both the busy bit and card state solves the issue. Signed-off-by: Pierre Ossman --- drivers/mmc/card/block.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index e38d5a3b2a89..acaa05200ae7 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -321,7 +321,13 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) req->rq_disk->disk_name, err); goto cmd_err; } - } while (!(cmd.resp[0] & R1_READY_FOR_DATA)); + /* + * Some cards mishandle the status bits, + * so make sure to check both the busy + * indication and the card state. + */ + } while (!(cmd.resp[0] & R1_READY_FOR_DATA) || + (R1_CURRENT_STATE(cmd.resp[0]) == 7)); #if 0 if (cmd.resp[0] & ~0x00000900) -- cgit v1.2.3