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path: root/drivers/hwmon/pc87427.c
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Diffstat (limited to 'drivers/hwmon/pc87427.c')
-rw-r--r--drivers/hwmon/pc87427.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/hwmon/pc87427.c b/drivers/hwmon/pc87427.c
index affa21a5ccf..29354fa26f8 100644
--- a/drivers/hwmon/pc87427.c
+++ b/drivers/hwmon/pc87427.c
@@ -31,6 +31,7 @@
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>
+#include <linux/ioport.h>
#include <asm/io.h>
static struct platform_device *pdev;
@@ -429,6 +430,12 @@ static int __devinit pc87427_probe(struct platform_device *pdev)
/* This will need to be revisited when we add support for
temperature and voltage monitoring. */
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!request_region(res->start, res->end - res->start + 1, DRVNAME)) {
+ err = -EBUSY;
+ dev_err(&pdev->dev, "Failed to request region 0x%lx-0x%lx\n",
+ (unsigned long)res->start, (unsigned long)res->end);
+ goto exit_kfree;
+ }
data->address[0] = res->start;
mutex_init(&data->lock);
@@ -438,7 +445,7 @@ static int __devinit pc87427_probe(struct platform_device *pdev)
/* Register sysfs hooks */
if ((err = device_create_file(&pdev->dev, &dev_attr_name)))
- goto exit_kfree;
+ goto exit_release_region;
for (i = 0; i < 8; i++) {
if (!(data->fan_enabled & (1 << i)))
continue;
@@ -462,6 +469,8 @@ exit_remove_files:
continue;
sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_fan[i]);
}
+exit_release_region:
+ release_region(res->start, res->end - res->start + 1);
exit_kfree:
platform_set_drvdata(pdev, NULL);
kfree(data);
@@ -472,6 +481,7 @@ exit:
static int __devexit pc87427_remove(struct platform_device *pdev)
{
struct pc87427_data *data = platform_get_drvdata(pdev);
+ struct resource *res;
int i;
platform_set_drvdata(pdev, NULL);
@@ -484,6 +494,9 @@ static int __devexit pc87427_remove(struct platform_device *pdev)
}
kfree(data);
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ release_region(res->start, res->end - res->start + 1);
+
return 0;
}