[PATCH] Make sure therm_adt746x only handles known hardware
This patch limits therm_adt746x to currently existing fan controllers in
Apple laptops. It may avoid problems with future hardware.
Signed-off-by: Colin Leroy <colin@colino.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index e0ac63e..c7e84ab 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -545,6 +545,12 @@
else
return -ENODEV;
+ prop = (u32 *)get_property(np, "hwsensor-params-version", NULL);
+ printk(KERN_INFO "adt746x: version %d (%ssupported)\n", *prop,
+ (*prop == 1)?"":"un");
+ if (*prop != 1)
+ return -ENODEV;
+
prop = (u32 *)get_property(np, "reg", NULL);
if (!prop)
return -ENODEV;