Hi:
* Jean Delvare <khali at linux-fr.org> [2007-06-12 13:57:19 +0200]:
> Fix a potential race condition when some hardware monitoring platform
> drivers are being unloaded. I believe that the driver data pointer
> shouldn't be cleared before all the sysfs files are removed, otherwise
> a sysfs callback might attempt to dereference a NULL pointer. I'm not
> sure exactly what the driver core protects drivers against, so let's
> play it safe.
>
> While we're here, clear the driver data pointer when probe fails, so
> as to not leave an invalid pointer behind us.
>
> Signed-off-by: Jean Delvare <khali at linux-fr.org>
Applied to testing w/ one addition for vt8231...
--- a/drivers/hwmon/vt8231.c
+++ b/drivers/hwmon/vt8231.c
@@ -743,6 +743,7 @@ exit_remove_files:
sysfs_remove_group(&pdev->dev.kobj, &vt8231_group);
exit_free:
+ platform_set_drvdata(pdev, NULL);
kfree(data);
exit_release:
Thanks & regards,
--
Mark M. Hoffman
mhoffman at lightlink.com
