hwmon: refuse to load abituguru driver on non-Abit boards

With this patch the abituguru refuses to load on non Abit motherboards, as
discussed in lkml CONFIG_BREAK_MY_MACHINE thread.

Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>

diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
index c618667..d575ee9 100644 (file)
--- a/drivers/hwmon/abituguru.c
+++ b/drivers/hwmon/abituguru.c
@@ -31,6 +31,7 @@
 #include <linux/platform_device.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
+#include <linux/dmi.h>
 #include <asm/io.h>
 
 /* Banks */
@@ -1447,6 +1448,15 @@ static int __init abituguru_init(void)
        int address, err;
        struct resource res = { .flags = IORESOURCE_IO };
 
+#ifdef CONFIG_DMI
+       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 = abituguru_detect();
        if (address < 0)
                return address;