hwmon: Check for ACPI resource conflicts

Check for ACPI resource conflicts in hwmon drivers. I've included
all Super-I/O and PCI drivers.

I've voluntarily left out:
* Vendor-specific drivers: if they conflicted on any system, this would
  pretty much mean that they conflict on all systems, and we would know
  by now.
* Legacy ISA drivers (lm78 and w83781d): they only support chips found
  on old designs were ACPI either wasn't supported or didn't deal with
  thermal management.
* Drivers accessing the I/O resources indirectly (e.g. through SMBus):
  the checks are already done where they belong, i.e. in the bus drivers.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: David Hubbard <david.c.hubbard@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index d867b377d4e9..609cafff86bc 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -28,6 +28,7 @@
 #include <linux/err.h>
 #include <linux/mutex.h>
 #include <linux/io.h>
+#include <linux/acpi.h>
 
 #define DRVNAME "f71882fg"
 
@@ -1929,6 +1930,10 @@ static int __init f71882fg_device_add(unsigned short address,
                 return -ENOMEM;
 
         res.name = f71882fg_pdev->name;
+        err = acpi_check_resource_conflict(&res);
+        if (err)
+                return err;
+
         err = platform_device_add_resources(f71882fg_pdev, &res, 1);
         if (err) {
                 printk(KERN_ERR DRVNAME ": Device resource addition failed\n");