diff --git a/include/linux/i2c-pnx.h b/include/linux/i2c-pnx.h
index f13255e06406aa9eb7a8c60485599b960a976f8b..9eb07bbc6522bb4508797a7468a22ba465894e34 100644
--- a/include/linux/i2c-pnx.h
+++ b/include/linux/i2c-pnx.h
@@ -21,7 +21,7 @@ struct i2c_pnx_mif {
 	int			mode;		/* Interface mode */
 	struct completion	complete;	/* I/O completion */
 	struct timer_list	timer;		/* Timeout */
-	char *			buf;		/* Data buffer */
+	u8 *			buf;		/* Data buffer */
 	int			len;		/* Length of data buffer */
 };