[4.19,153/229] mfd: sm501: Add check for platform_driver_register()

Message ID 20221024113003.961820486@linuxfoundation.org
State New
Headers
Series None |

Commit Message

Greg KH Oct. 24, 2022, 11:31 a.m. UTC
  From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit 8325a6c24ad78b8c1acc3c42b098ee24105d68e5 ]

As platform_driver_register() can return error numbers,
it should be better to check platform_driver_register()
and deal with the exception.

Fixes: b6d6454fdb66 ("[PATCH] mfd: SM501 core driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220913091112.1739138-1-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mfd/sm501.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
  

Patch

diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index ec1ac61a21ed..6254b4025b5e 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1738,7 +1738,12 @@  static struct platform_driver sm501_plat_driver = {
 
 static int __init sm501_base_init(void)
 {
-	platform_driver_register(&sm501_plat_driver);
+	int ret;
+
+	ret = platform_driver_register(&sm501_plat_driver);
+	if (ret < 0)
+		return ret;
+
 	return pci_register_driver(&sm501_pci_driver);
 }