diff options
Diffstat (limited to 'drivers/media/usb/gspca/cpia1.c')
| -rw-r--r-- | drivers/media/usb/gspca/cpia1.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/cpia1.c b/drivers/media/usb/gspca/cpia1.c index 2b09af886..5e7853435 100644 --- a/drivers/media/usb/gspca/cpia1.c +++ b/drivers/media/usb/gspca/cpia1.c @@ -28,6 +28,7 @@ #include <linux/input.h> #include <linux/sched/signal.h> +#include <linux/bitops.h> #include "gspca.h" @@ -1033,6 +1034,8 @@ static int set_flicker(struct gspca_dev *gspca_dev, int on, int apply) sd->params.exposure.expMode = 2; sd->exposure_status = EXPOSURE_NORMAL; } + if (sd->params.exposure.gain >= BITS_PER_TYPE(currentexp)) + return -EINVAL; currentexp = currentexp << sd->params.exposure.gain; sd->params.exposure.gain = 0; /* round down current exposure to nearest value */ |