[PATCH] HWMON: Trim VID values to correct number of bits

Following patch trims the VID value to correct number of bits
for each VRM.

Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/hwmon/hwmon-vid.c b/drivers/hwmon/hwmon-vid.c
index a74a44f..b0fd267 100644 (file)
--- a/drivers/hwmon/hwmon-vid.c
+++ b/drivers/hwmon/hwmon-vid.c
@@ -70,6 +70,7 @@ int vid_from_reg(int val, u8 vrm)
        switch(vrm) {
 
        case 100:               /* VRD 10.0 */
+               val &= 0x3f;
                if((val & 0x1f) == 0x1f)
                        return 0;
                if((val & 0x1f) <= 0x09 || val == 0x0a)
@@ -82,14 +83,17 @@ int vid_from_reg(int val, u8 vrm)
                return vid;
 
        case 24:                /* Opteron processor */
+               val &= 0x1f;
                return(val == 0x1f ? 0 : 1550 - val * 25);
 
        case 91:                /* VRM 9.1 */
        case 90:                /* VRM 9.0 */
+               val &= 0x1f;
                return(val == 0x1f ? 0 :
                                       1850 - val * 25);
 
        case 85:                /* VRM 8.5 */
+               val &= 0x1f;
                return((val & 0x10  ? 25 : 0) +
                       ((val & 0x0f) > 0x04 ? 2050 : 1250) -
                       ((val & 0x0f) * 50));
@@ -98,14 +102,17 @@ int vid_from_reg(int val, u8 vrm)
                val &= 0x0f;
                                /* fall through */
        case 82:                /* VRM 8.2 */
+               val &= 0x1f;
                return(val == 0x1f ? 0 :
                       val & 0x10  ? 5100 - (val) * 100 :
                                     2050 - (val) * 50);
        case 17:                /* Intel IMVP-II */
+               val &= 0x1f;
                return(val & 0x10 ? 975 - (val & 0xF) * 25 :
                                    1750 - val * 50);
        case 13:
-               return(1708 - (val & 0x3f) * 16);
+               val &= 0x3f;
+               return(1708 - val * 16);
        default:                /* report 0 for unknown */
                printk(KERN_INFO "hwmon-vid: requested unknown VRM version\n");
                return 0;