netdev - [patch] yam: integer underflow in yam

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Message-ID: <20131014121931.GI6247@mwanda>
Date:	Mon, 14 Oct 2013 15:28:38 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Jean-Paul Roubelat <jpr@...bb.org>
Cc:	linux-hams@...r.kernel.org, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] 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@...cle.com>

diff --git a/include/linux/yam.h b/include/linux/yam.h
index 7fe2822..512cdc2 100644
--- 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];
 };
--
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