From e7afa79a3b35a27a046a2139f8b20bd6b98155c2 Mon Sep 17 00:00:00 2001
From: Wenchao Chen <wenchao.chen@unisoc.com>
Date: Fri, 16 Sep 2022 17:05:06 +0800
Subject: [PATCH] mmc: hsq: Fix data stomping during mmc recovery
Git-commit: e7afa79a3b35a27a046a2139f8b20bd6b98155c2
Patch-mainline: v6.0
References: git-fixes

The block device uses multiple queues to access emmc. There will be up to 3
requests in the hsq of the host. The current code will check whether there
is a request doing recovery before entering the queue, but it will not check
whether there is a request when the lock is issued. The request is in recovery
mode. If there is a request in recovery, then a read and write request is
initiated at this time, and the conflict between the request and the recovery
request will cause the data to be trampled.

Signed-off-by: Wenchao Chen <wenchao.chen@unisoc.com>
Fixes: 511ce378e16f ("mmc: Add MMC host software queue support")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220916090506.10662-1-wenchao.chen666@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/mmc/host/mmc_hsq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mmc_hsq.c b/drivers/mmc/host/mmc_hsq.c
index a5e05ed0fda3..9d35453e7371 100644
--- a/drivers/mmc/host/mmc_hsq.c
+++ b/drivers/mmc/host/mmc_hsq.c
@@ -34,7 +34,7 @@ static void mmc_hsq_pump_requests(struct mmc_hsq *hsq)
 	spin_lock_irqsave(&hsq->lock, flags);
 
 	/* Make sure we are not already running a request now */
-	if (hsq->mrq) {
+	if (hsq->mrq || hsq->recovery_halt) {
 		spin_unlock_irqrestore(&hsq->lock, flags);
 		return;
 	}
-- 
2.35.3