From: Ken Sumrall <ksumrall@android.com>
Date: Wed, 26 Oct 2011 01:16:58 +0000 (-0700)
Subject: mmc: block: Improve logging of handling emmc timeouts
X-Git-Tag: firefly_0821_release~2958^2~484
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=94f639e7e33e92ab4b1f389f5a507abe236a0f66;p=firefly-linux-kernel-4.4.55.git

mmc: block: Improve logging of handling emmc timeouts

Add some logging to make it clear just how the emmc timeout
was handled.

Change-Id: Id33fd28d8b9778dc4e85db829e2637a328eddab4
Signed-off-by: Ken Sumrall <ksumrall@android.com>
---

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 43d0044ac8fe..e5b749822acc 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -940,18 +940,22 @@ static int mmc_blk_cmd_error(struct request *req, const char *name, int error,
 			req->rq_disk->disk_name, "timed out", name, status);
 
 		/* If the status cmd initially failed, retry the r/w cmd */
-		if (!status_valid)
+		if (!status_valid) {
+			pr_err("%s: status not valid, retrying timeout\n", req->rq_disk->disk_name);
 			return ERR_RETRY;
-
+		}
 		/*
 		 * If it was a r/w cmd crc error, or illegal command
 		 * (eg, issued in wrong state) then retry - we should
 		 * have corrected the state problem above.
 		 */
-		if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND))
+		if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) {
+			pr_err("%s: command error, retrying timeout\n", req->rq_disk->disk_name);
 			return ERR_RETRY;
+		}
 
 		/* Otherwise abort the command */
+		pr_err("%s: not retrying timeout\n", req->rq_disk->disk_name);
 		return ERR_ABORT;
 
 	default: