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Commit c6b76d1f authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: au88x0 - Avoid possible Oops at unbinding 



The irq handler must check whether the MPU401 instance is still alive.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 0717d0f5

sound/pci/au88x0/au88x0_core.c

+1 −1
Original line number Diff line number Diff line
@@ -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;