linux-kernel - [PATCH] Staging: rts5208: Fix error handling on rtsx_send

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Message-Id: <20190105141443.1745-1-pakki001@umn.edu>
Date:   Sat,  5 Jan 2019 08:14:41 -0600
From:   Aditya Pakki <pakki001@....edu>
To:     pakki001@....edu
Cc:     kjlu@....edu, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kim Bradley <kim.jamie.bradley@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Colin Ian King <colin.king@...onical.com>,
        Aymen Qader <qader.aymen@...il.com>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Staging: rts5208: Fix error handling on rtsx_send_cmd

In sd_execute_write_data, the rtsx_send_cmd could fail with ETIMEDOUT
or EIO. The fix adds a check to handle these failures.

Signed-off-by: Aditya Pakki <pakki001@....edu>
---
 drivers/staging/rts5208/sd.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rts5208/sd.c b/drivers/staging/rts5208/sd.c
index 2c47ae613ea1..c256a2398651 100644
--- a/drivers/staging/rts5208/sd.c
+++ b/drivers/staging/rts5208/sd.c
@@ -4437,7 +4437,12 @@ int sd_execute_write_data(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 		rtsx_init_cmd(chip);
 		rtsx_add_cmd(chip, CHECK_REG_CMD, 0xFD30, 0x02, 0x02);
 
-		rtsx_send_cmd(chip, SD_CARD, 250);
+		retval = rtsx_send_cmd(chip, SD_CARD, 250);
+		if (retval < 0) {
+			write_err = true;
+			rtsx_clear_sd_error(chip);
+			goto sd_execute_write_cmd_failed;
+		}
 
 		retval = sd_update_lock_status(chip);
 		if (retval != STATUS_SUCCESS) {
-- 
2.17.1