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| author |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-11-01 17:05:40 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-12-11 13:17:22 -0500 |
| commit | 09db1a462a03a1177a768406451405e4e0dcaf9a (patch) | |
| tree | 97d400e2ce6212ca717ad3e7cd9bf820cfec8b21 /include/linux/led-class-flash.h | |
| parent | media: dvb_frontend: be sure to init dvb_frontend_handle_ioctl() return code (diff) | |
| download | linux-dev-09db1a462a03a1177a768406451405e4e0dcaf9a.tar.xz linux-dev-09db1a462a03a1177a768406451405e4e0dcaf9a.zip | |
media: led-class-flash: better handle NULL flash struct
The logic at V4L2 led core assumes that the flash struct
can be null. However, it doesn't check for null while
trying to set, causing some smatch to warn:
drivers/media/v4l2-core/v4l2-flash-led-class.c:210 v4l2_flash_s_ctrl() error: we previously assumed 'fled_cdev' could be null (see line 200)
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/linux/led-class-flash.h')
| -rw-r--r-- | include/linux/led-class-flash.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h index e97966d1fb8d..700efaa9e115 100644 --- a/include/linux/led-class-flash.h +++ b/include/linux/led-class-flash.h @@ -121,6 +121,8 @@ extern void led_classdev_flash_unregister(struct led_classdev_flash *fled_cdev); static inline int led_set_flash_strobe(struct led_classdev_flash *fled_cdev, bool state) { + if (!fled_cdev) + return -EINVAL; return fled_cdev->ops->strobe_set(fled_cdev, state); } @@ -136,6 +138,8 @@ static inline int led_set_flash_strobe(struct led_classdev_flash *fled_cdev, static inline int led_get_flash_strobe(struct led_classdev_flash *fled_cdev, bool *state) { + if (!fled_cdev) + return -EINVAL; if (fled_cdev->ops->strobe_get) return fled_cdev->ops->strobe_get(fled_cdev, state); |