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, 6 insertions, 0 deletions

diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index 075164dd65a7..a3a01dc35a31 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -48,6 +48,7 @@
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
+#include <linux/acpi.h>
 #include <asm/io.h>
 #include "lm75.h"
 
@@ -1544,6 +1545,11 @@ static int __init sensors_w83627ehf_init(void)
         res.start = address + IOREGION_OFFSET;
         res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
         res.flags = IORESOURCE_IO;
+
+        err = acpi_check_resource_conflict(&res);
+        if (err)
+                goto exit;
+
         err = platform_device_add_resources(pdev, &res, 1);
         if (err) {
                 printk(KERN_ERR DRVNAME ": Device resource addition failed "