Bail out early, otherwise we follow a null pointer. Signed-off-by: Sean Young <sean@xxxxxxxx> --- drivers/media/rc/lirc_dev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c index 0030ce0..a54ca53 100644 --- a/drivers/media/rc/lirc_dev.c +++ b/drivers/media/rc/lirc_dev.c @@ -647,6 +647,9 @@ ssize_t lirc_dev_fop_read(struct file *file, return -ENODEV; } + if (!LIRC_CAN_REC(ir->d.features)) + return -EINVAL; + dev_dbg(ir->d.dev, LOGHEAD "read called\n", ir->d.name, ir->d.minor); buf = kzalloc(ir->chunk_size, GFP_KERNEL); -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
