hwmon/f71805f: Fix a race condition

I think I introduced a potential race condition bug with commit 51c997d. I didn't realize it back then, but platform_device_put and platform_device_release both appear to free the platform data associated with the device. This makes an explicit kfree redundant at best, and maybe even racy, as it might occur while someone still holds a reference to the platform device. Signed-off-by: Jean Delvare <[email protected]>
olifre · Feb 14, 2007 · a117ddd · a117ddd
1 parent bc8f0a2
commit a117ddd
Showing 1 changed file with 1 addition and 7 deletions.
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
@@ -1290,14 +1290,11 @@ static int __init f71805f_device_add(unsigned short address,
 	if (err) {
 		printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
 		       err);
-		goto exit_kfree_data;
+		goto exit_device_put;
 	}
 
 	return 0;
 
-exit_kfree_data:
-	kfree(pdev->dev.platform_data);
-	pdev->dev.platform_data = NULL;
 exit_device_put:
 	platform_device_put(pdev);
 exit:
@@ -1390,10 +1387,7 @@ static int __init f71805f_init(void)
 
 static void __exit f71805f_exit(void)
 {
-	kfree(pdev->dev.platform_data);
-	pdev->dev.platform_data = NULL;
 	platform_device_unregister(pdev);
-
 	platform_driver_unregister(&f71805f_driver);
 }