diff options
| author | Peter Huewe <peterhuewe@gmx.de> | 2010-07-07 04:52:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-13 13:19:33 -0700 |
| commit | 00895580dcfeea293c0a899a84fc9c01b7d00d6c (patch) | |
| tree | 7cb83eabc0ac58347198ac4c06f46128a582ef18 /drivers | |
| parent | 179a6b86cdee558883664fa9f063a8361ba63b79 (diff) | |
Staging: panel: Prevent double-calling of parport_release - fix oops.
commit 060132ae42cce3f9d2fd34d9a17b98362b44b9f9 upstream.
This patch prevents the code from calling parport_release and
parport_unregister_device twice with the same arguments - and thus fixes an oops.
Rationale:
After the first call the parport is already released and the
handle isn't valid anymore and calling parport_release and
parport_unregister_device twice isn't a good idea.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/panel/panel.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c index 4ce399b6d237..c39a25f500ef 100644 --- a/drivers/staging/panel/panel.c +++ b/drivers/staging/panel/panel.c @@ -2181,6 +2181,7 @@ int panel_init(void) if (pprt) { parport_release(pprt); parport_unregister_device(pprt); + pprt = NULL; } parport_unregister_driver(&panel_driver); printk(KERN_ERR "Panel driver version " PANEL_VERSION @@ -2230,6 +2231,7 @@ static void __exit panel_cleanup_module(void) /* TODO: free all input signals */ parport_release(pprt); parport_unregister_device(pprt); + pprt = NULL; } parport_unregister_driver(&panel_driver); } |