[v4,4/4] do HW reset after each reading/writing/erasing

Commit Message

Chuanxiao.Dong Dec. 1, 2010, 12:49 p.m. UTC

None

Patch

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 217f820..c50f94b 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -424,6 +424,16 @@  static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
 
 		mmc_wait_for_req(card->host, &brq.mrq);
 
+		/*
+		 * Check if need to do HW reset.
+		 */
+		if (brq.cmd.error)
+			mmc_handle_timeout_error(card->host, brq.cmd.error);
+		else if (brq.data.error)
+			mmc_handle_timeout_error(card->host, brq.data.error);
+		else if (brq.stop.error)
+			mmc_handle_timeout_error(card->host, brq.stop.error);
+
 		mmc_queue_bounce_post(mq);
 
 		/*
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 530fc35..559ff1c 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1382,6 +1382,8 @@  static int mmc_do_erase(struct mmc_card *card, unsigned int from,
 	cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
 	mmc_set_erase_timeout(card, &cmd, arg, qty);
 	err = mmc_wait_for_cmd(card->host, &cmd, 0);
+	/* Before return, check whether can do a HW reset */
+	mmc_handle_timeout_error(card->host, cmd.error);
 	if (err) {
 		printk(KERN_ERR "mmc_erase: erase error %d, status %#x\n",
 		       err, cmd.resp[0]);