diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/rc/ir-lirc-codec.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c index e4561264e124..e5be920c0599 100644 --- a/drivers/media/rc/ir-lirc-codec.c +++ b/drivers/media/rc/ir-lirc-codec.c @@ -140,11 +140,20 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf, goto out; } + for (i = 0; i < count; i++) { + if (txbuf[i] > IR_MAX_DURATION / 1000 - duration || !txbuf[i]) { + ret = -EINVAL; + goto out; + } + + duration += txbuf[i]; + } + ret = dev->tx_ir(dev, txbuf, count); if (ret < 0) goto out; - for (i = 0; i < ret; i++) + for (duration = i = 0; i < ret; i++) duration += txbuf[i]; ret *= sizeof(unsigned int); |