* [PATCH] media: staging: atomisp: fix the uninitialized use in gc2235_detect()
@ 2021-07-11 20:23 Yizhuo
0 siblings, 0 replies; only message in thread
From: Yizhuo @ 2021-07-11 20:23 UTC (permalink / raw)
Cc: Yizhuo, Mauro Carvalho Chehab, Sakari Ailus, Greg Kroah-Hartman,
Dan Carpenter, linux-media, linux-staging, linux-kernel
Inside function gc2235_detect(), variable "low" could be uninitialized
if ov5693_read_reg() returns error, however, it affects the value of
variable "id". The "id" is used in the later if statement, which is
potentially unsafe.
Signed-off-by: Yizhuo <yzhai003@ucr.edu>
---
drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c b/drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c
index e698b63d6cb7..a899e806dfcd 100644
--- a/drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c
+++ b/drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c
@@ -1714,6 +1714,8 @@ static int ov5693_detect(struct i2c_client *client)
}
ret = ov5693_read_reg(client, OV5693_8BIT,
OV5693_SC_CMMN_CHIP_ID_L, &low);
+ if (ret)
+ return ret;
id = ((((u16)high) << 8) | (u16)low);
if (id != OV5693_ID) {
--
2.32.0
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2021-07-11 20:24 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-11 20:23 [PATCH] media: staging: atomisp: fix the uninitialized use in gc2235_detect() Yizhuo
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).