[ALSA] snd-emu10k1: Fixes ALSA bug#2190

Fixes ALSA bug#2190 System hangs on unplugging Audigy 2 ZS
Notebook CardBus card.

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 5 insertions, 1 deletions

diff --git a/sound/pci/emu10k1/irq.c b/sound/pci/emu10k1/irq.c
index a8b31286b6db..1076af4c3669 100644
--- a/sound/pci/emu10k1/irq.c
+++ b/sound/pci/emu10k1/irq.c
@@ -37,9 +37,13 @@ irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         int handled = 0;
 
         while ((status = inl(emu->port + IPR)) != 0) {
-                //printk("emu10k1 irq - status = 0x%x\n", status);
+                //snd_printk(KERN_INFO "emu10k1 irq - status = 0x%x\n", status);
                 orig_status = status;
                 handled = 1;
+                if ((status & 0xffffffff) == 0xffffffff) {
+                        snd_printk(KERN_INFO "snd-emu10k1: Suspected sound card removal\n");
+                        break;
+                }
                 if (status & IPR_PCIERROR) {
                         snd_printk(KERN_ERR "interrupt: PCI error\n");
                         snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE);