[PATCH] mmc: core: fix the aysync mechanism when card removed

[Jaehoon Chung <jh80.chung@samsung.com>]

When card removed, then didn't complete the previously data.
(It didn't wakeup any interrupt.)
If card is removed, then we can assume to complete the previously data.
And wakeup the interrupt for wait_event of data.

This problem is produced when sd-card is removed.(Sd-card is running some operation)

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <Kyungmin.park@samsung.com>
---
 drivers/mmc/core/core.c |   31 ++++++++++++++++++++-----------
 1 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8b3a122..bc1d627 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -515,17 +515,26 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
 		mmc_pre_req(host, areq->mrq, !host->areq);
 
 	if (host->areq) {
-			err = mmc_wait_for_data_req_done(host, host->areq->mrq,
-					areq);
-			if (err == MMC_BLK_NEW_REQUEST) {
-				if (error)
-					*error = err;
-				/*
-				 * The previous request was not completed,
-				 * nothing to return
-				 */
-				return NULL;
-			}
+		err = mmc_wait_for_data_req_done(host, host->areq->mrq,
+				areq);
+		if (err == MMC_BLK_NEW_REQUEST) {
+			if (error)
+				*error = err;
+			/*
+			 * The previous request was not completed,
+			 * nothing to return
+			 */
+			return NULL;
+		} else if (err == MMC_BLK_NOMEDIUM && areq) {
+			struct mmc_context_info *ctnx = &host->context_info;
+			/*
+			 * If crad is removed,
+			 * then we didn't wait for data completed.
+			 * Assume that data-recieve done.
+			 */
+			ctnx->is_done_rcv = true;
+			wake_up_interruptible(&ctnx->wait);
+		}
 		/*
 		 * Check BKOPS urgency for each R1 response
 		 */
-- 
1.7.5.4