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>
diff --git a/drivers/hwmon/pc87427.c b/drivers/hwmon/pc87427.c
index 7265f22..3a8a0f7 100644
--- a/drivers/hwmon/pc87427.c
+++ b/drivers/hwmon/pc87427.c
@@ -32,6 +32,7 @@
#include <linux/mutex.h>
#include <linux/sysfs.h>
#include <linux/ioport.h>
+#include <linux/acpi.h>
#include <asm/io.h>
static unsigned short force_id;
@@ -524,6 +525,10 @@
};
int err;
+ err = acpi_check_resource_conflict(&res);
+ if (err)
+ goto exit;
+
pdev = platform_device_alloc(DRVNAME, address);
if (!pdev) {
err = -ENOMEM;