mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-12 05:48:40 +00:00
Code Issues Releases Wiki Activity

mmc_block: check card state after write

Browse source 
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 <drzeus@drzeus.cx>
This commit is contained in:
Pierre Ossman 2007-11-02 18:21:13 +01:00
parent 2ffbb8377c
commit d198f10198
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/mmc/card/block.c
View file

@ -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)