diff mbox series

[37/38] media: atomisp: atomisp_gmin_platform: check before use

Message ID 7778f1f6c8cbc303f6f7377e0daca28a6825f862.1599062230.git.mchehab+huawei@kernel.org (mailing list archive)
State New, archived
Headers show
Series media sparse/smatch warn fixes | expand

Commit Message

Mauro Carvalho Chehab Sept. 2, 2020, 4:10 p.m. UTC 
solve this smatch warning:
	drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c:842 gmin_v1p8_ctrl() warn: variable dereferenced before check 'gs' (see line 832)

By moving the check to happen before its usage.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
index c49d27038d27..8652f71dfff6 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
@@ -829,6 +829,9 @@  static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
 	int ret;
 	int value;
 
+	if (!gs || gs->v1p8_on == on)
+		return 0;
+
 	if (gs->v1p8_gpio >= 0) {
 		pr_info("atomisp_gmin_platform: 1.8v power on GPIO %d\n",
 			gs->v1p8_gpio);
@@ -839,8 +842,6 @@  static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
 			pr_err("V1P8 GPIO initialization failed\n");
 	}
 
-	if (!gs || gs->v1p8_on == on)
-		return 0;
 	gs->v1p8_on = on;
 
 	if (gs->v1p8_gpio >= 0)