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authorHans de Goede <j.w.r.degoede@hhs.nl>2008-05-23 16:10:41 +0200
committerMark M. Hoffman <mhoffman@lightlink.com>2008-06-19 06:50:32 -0400
commitb3aeab0cdbd0fe5339a3a5918b59eebf148cbcd1 (patch)
treed2957d48337305cb033c353c2de34d3d8163942a /drivers
parent25845c22647fad2a0852cf6bf277d84e8a7a6b4a (diff)
hwmon: (abituguru3) update driver detection
It has been reported that the abituguru3 driver fails to load after a BIOS update. This patch fixes this by loosening the detection routine so that it will work after the BIOS update too. To compensate for the now very loose detection an additional check is added on the DMI Base Board vendor string to make sure we only load on Abit motherboards, this is the same as the check in the abituguru (1 / 2) driver. Signed-of-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hwmon/abituguru3.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/hwmon/abituguru3.c b/drivers/hwmon/abituguru3.c
index f2086e99a9cb..f00f497b9ca9 100644
--- a/drivers/hwmon/abituguru3.c
+++ b/drivers/hwmon/abituguru3.c
@@ -30,6 +30,7 @@
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
+#include <linux/dmi.h>
#include <asm/io.h>
/* uGuru3 bank addresses */
@@ -1112,11 +1113,12 @@ static int __init abituguru3_detect(void)
{
/* See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or
0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05
- at CMD instead, why is unknown. So we test for 0x05 too. */
+ or 0x55 at CMD instead, why is unknown. */
u8 data_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_DATA);
u8 cmd_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_CMD);
if (((data_val == 0x00) || (data_val == 0x08)) &&
- ((cmd_val == 0xAC) || (cmd_val == 0x05)))
+ ((cmd_val == 0xAC) || (cmd_val == 0x05) ||
+ (cmd_val == 0x55)))
return ABIT_UGURU3_BASE;
ABIT_UGURU3_DEBUG("no Abit uGuru3 found, data = 0x%02X, cmd = "
@@ -1139,6 +1141,15 @@ static int __init abituguru3_init(void)
int address, err;
struct resource res = { .flags = IORESOURCE_IO };
+#ifdef CONFIG_DMI
+ const char *board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
+
+ /* safety check, refuse to load on non Abit motherboards */
+ if (!force && (!board_vendor ||
+ strcmp(board_vendor, "http://www.abit.com.tw/")))
+ return -ENODEV;
+#endif
+
address = abituguru3_detect();
if (address < 0)
return address;

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