yam: integer underflow in yam_ioctl()

We cap bitrate at YAM_MAXBITRATE in yam_ioctl(), but it could also be
negative.  I don't know the impact of using a negative bitrate but let's
prevent it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/yam.h b/include/linux/yam.h
index 7fe28228b2742efc0c9eb69c7bbc866f0194ef19..512cdc2fb80f40f99bb1b09fe1d0d4dcfeab345c 100644 (file)
--- a/include/linux/yam.h
+++ b/include/linux/yam.h
@@ -77,6 +77,6 @@ struct yamdrv_ioctl_cfg {
 
 struct yamdrv_ioctl_mcs {
        int cmd;
-       int bitrate;
+       unsigned int bitrate;
        unsigned char bits[YAM_FPGA_SIZE];
 };