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mmc: core: fix permanent sleep of mmcqd during card removal 

This patch is derived from:
"mmc: fix async request mechanism for sequential read scenarios".

According as async transfer, a request is handled with twice mmc_start_req.
When the card is removed, the request is actually not issued in the first
mmc_start_req [__mmc_start_data_req]. And then mmc_wait_for_data_req_done
will come in the next mmc_start_req. But there is no event for completions.
wake_up_interruptible is needed in __mmc_start_data_req for the case of
removed card.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Seungwon Jeon 2013-01-22 19:48:03 +09:00 committed by Chris Ball
parent 52983382c7
commit 9b844961c2
1 changed files with 1 additions and 0 deletions
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1
drivers/mmc/core/core.c
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@ -350,6 +350,7 @@ static int __mmc_start_data_req(struct mmc_host *host, struct mmc_request *mrq)
mrq->host = host;
if (mmc_card_removed(host->card)) {
mrq->cmd->error = -ENOMEDIUM;
mmc_wait_data_done(mrq);
return -ENOMEDIUM;
}
mmc_start_request(host, mrq);