Several of the drivers use carrier as a divisor in their s_tx_carrier()
functions. We should do a sanity check here like we do for
LIRC_SET_REC_CARRIER.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
v2: Ben Hutchings pointed out that my first patch was not a complete
fix.
diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index 6ad4a07..28dc0f0 100644
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -211,6 +211,9 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
if (!dev->s_tx_carrier)
return -EINVAL;
+ if (val <= 0)
+ return -EINVAL;
+
return dev->s_tx_carrier(dev, val);
case LIRC_SET_SEND_DUTY_CYCLE:
--
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