hwmon: New AD7416, AD7417 and AD7418 driver

[linux-2.6-omap-h63xx.git] / drivers / hwmon / vt1211.c

diff --git a/drivers/hwmon/vt1211.c b/drivers/hwmon/vt1211.c
index 89c23d6add7be174190cbc90f2cf2f1b25d2be10..9f3e332c5b7fe129f6ec9a62baa3201168ecf0c3 100644 (file)
--- a/drivers/hwmon/vt1211.c
+++ b/drivers/hwmon/vt1211.c
@@ -31,6 +31,7 @@
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
+#include <linux/ioport.h>
 #include <asm/io.h>
 
 static int uch_config = -1;
@@ -1130,6 +1131,12 @@ static int __devinit vt1211_probe(struct platform_device *pdev)
        }
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+       if (!request_region(res->start, res->end - res->start + 1, DRVNAME)) {
+               err = -EBUSY;
+               dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
+                       (unsigned long)res->start, (unsigned long)res->end);
+               goto EXIT_KFREE;
+       }
        data->addr = res->start;
        data->name = DRVNAME;
        mutex_init(&data->update_lock);
@@ -1197,6 +1204,8 @@ EXIT_DEV_REMOVE:
        dev_err(dev, "Sysfs interface creation failed (%d)\n", err);
 EXIT_DEV_REMOVE_SILENT:
        vt1211_remove_sysfs(pdev);
+       release_region(res->start, res->end - res->start + 1);
+EXIT_KFREE:
        platform_set_drvdata(pdev, NULL);
        kfree(data);
 EXIT:
@@ -1206,12 +1215,16 @@ EXIT:
 static int __devexit vt1211_remove(struct platform_device *pdev)
 {
        struct vt1211_data *data = platform_get_drvdata(pdev);
+       struct resource *res;
 
        hwmon_device_unregister(data->class_dev);
        vt1211_remove_sysfs(pdev);
        platform_set_drvdata(pdev, NULL);
        kfree(data);
 
+       res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+       release_region(res->start, res->end - res->start + 1);
+
        return 0;
 }