patch-2.4.0-test4 linux/drivers/char/wdt.c

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diff -u --recursive --new-file v2.4.0-test3/linux/drivers/char/wdt.c linux/drivers/char/wdt.c
@@ -35,6 +35,7 @@
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include "wd501p.h"
@@ -372,6 +373,7 @@
  
 static int wdt_release(struct inode *inode, struct file *file)
 {
+	lock_kernel();
 	if(MINOR(inode->i_rdev)==WATCHDOG_MINOR)
 	{
 #ifndef CONFIG_WATCHDOG_NOWAYOUT	
@@ -380,6 +382,7 @@
 #endif		
 		wdt_is_open=0;
 	}
+	unlock_kernel();
 	return 0;
 }
 

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