diff options
| author |   Takashi Iwai <tiwai@suse.de> | 2012-03-16 09:54:00 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-03-16 09:54:00 +0100 |
| commit | c6b76d1f02e2ab1109d8549877a3a24c6a2b4587 (patch) | |
| tree | 52cc1aa741e151fcd942d858f6075c01993f9f3e /sound | |
| parent | ALSA: usb-audio - Fix build error by consitification of rate list (diff) | |
| download | linux-dev-c6b76d1f02e2ab1109d8549877a3a24c6a2b4587.tar.xz linux-dev-c6b76d1f02e2ab1109d8549877a3a24c6a2b4587.zip | |
ALSA: au88x0 - Avoid possible Oops at unbinding
The irq handler must check whether the MPU401 instance is still alive.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/au88x0/au88x0_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/pci/au88x0/au88x0_core.c b/sound/pci/au88x0/au88x0_core.c index 1181c5ec2d4f..525f881f0409 100644 --- a/sound/pci/au88x0/au88x0_core.c +++ b/sound/pci/au88x0/au88x0_core.c @@ -2477,7 +2477,7 @@ static irqreturn_t vortex_interrupt(int irq, void *dev_id) hwread(vortex->mmio, VORTEX_IRQ_STAT); handled = 1; } - if (source & IRQ_MIDI) { + if ((source & IRQ_MIDI) && vortex->rmidi) { snd_mpu401_uart_interrupt(vortex->irq, vortex->rmidi->private_data); handled = 1; |