linux-kernel - [PATCH 4.18 012/228] staging: rts5208: fix missing error check on call to rtsx_write

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Message-Id: <20181002132459.857111955@linuxfoundation.org>
Date:   Tue,  2 Oct 2018 06:21:49 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 012/228] staging: rts5208: fix missing error check on call to rtsx_write_register

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Colin Ian King <colin.king@...onical.com>

[ Upstream commit c5fae4f4fd28189b1062fb8ef7b21fec37cb8b17 ]

Currently the check on error return from the call to rtsx_write_register
is checking the error status from the previous call. Fix this by adding
in the missing assignment of retval.

Detected by CoverityScan, CID#709877

Fixes: fa590c222fba ("staging: rts5208: add support for rts5208 and rts5288")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/staging/rts5208/sd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/rts5208/sd.c
+++ b/drivers/staging/rts5208/sd.c
@@ -4996,7 +4996,7 @@ int sd_execute_write_data(struct scsi_cm
 			goto sd_execute_write_cmd_failed;
 		}
 
-		rtsx_write_register(chip, SD_BYTE_CNT_L, 0xFF, 0x00);
+		retval = rtsx_write_register(chip, SD_BYTE_CNT_L, 0xFF, 0x00);
 		if (retval != STATUS_SUCCESS) {
 			rtsx_trace(chip);
 			goto sd_execute_write_cmd_failed;