[rdc] fix watchdog driver unregistering, patch by Bernhard Loos

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19979 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c b/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c
index 9e8b037..3ced6c9 100644 (file)
--- a/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c
+++ b/target/linux/rdc/files-2.6.30/drivers/watchdog/rdc321x_wdt.c
@@ -28,6 +28,7 @@
 #include <linux/watchdog.h>
 #include <linux/uaccess.h>
 #include <linux/pci.h>
+#include <linux/delay.h>
 
 #include <asm/rdc321x_defs.h>
 
@@ -123,8 +124,12 @@ static int rdc321x_wdt_open(struct inode *inode, struct file *file)
 
 static int rdc321x_wdt_release(struct inode *inode, struct file *file)
 {
-       if (rdc321x_wdt_dev.close_expected)
-               rdc321x_wdt_stop();
+       int res;
+       if (rdc321x_wdt_dev.close_expected) {
+               res = rdc321x_wdt_stop();
+               if (res)
+                       return res;
+       }
 
        rdc321x_wdt_dev.inuse = false;
 
@@ -181,7 +186,7 @@ static ssize_t rdc321x_wdt_write(struct file *file, const char __user *buf,
                                size_t count, loff_t *ppos)
 {
        size_t i;
- 
+
        if (!count)
                return -EIO;
 
@@ -248,6 +253,10 @@ static int __devexit rdc321x_wdt_remove(struct platform_device *pdev)
 {
        if (rdc321x_wdt_dev.inuse)
                rdc321x_wdt_dev.inuse = 0;
+
+       while (timer_pending(&rdc321x_wdt_dev.timer))
+               msleep(100);
+
        misc_deregister(&rdc321x_wdt_misc);
        return 0;
 }