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| author | Alan Cox <alan@linux.intel.com> | 2012-05-14 14:51:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-14 09:04:28 -0700 |
| commit | 1e66cded334e6cea596c72f6f650eec351b1e959 (patch) | |
| tree | ab344befd3d74f3ff168d0ab264adb3020e60a34 /drivers/tty | |
| parent | 1541f845d123a48fbca3cee32b2963b3fb3da83a (diff) | |
| download | linux-1e66cded334e6cea596c72f6f650eec351b1e959.tar.gz linux-1e66cded334e6cea596c72f6f650eec351b1e959.tar.xz linux-1e66cded334e6cea596c72f6f650eec351b1e959.zip | |
tty: Allow uart_register/unregister/register
This is legitimate but because we don't clear the drv->state pointer in the
unregister code causes a bogus BUG().
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42880
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 59fb3ba1e7ca..a21dc8e3b7c0 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2282,6 +2282,7 @@ void uart_unregister_driver(struct uart_driver *drv) tty_unregister_driver(p); put_tty_driver(p); kfree(drv->state); + drv->state = NULL; drv->tty_driver = NULL; } |