[KJ] [PATCH] oss/btaudio.c: Check ioremap return value and free with iounmap

[ville palo]

Check return value of the ioremap() and balance ioremap()
with iounmap().

Signed-off-by: Ville Palo <ville.palo at vi64pa.net>

diff --git a/sound/oss/btaudio.c b/sound/oss/btaudio.c
index 324a81f..9b1837f 100644
--- a/sound/oss/btaudio.c
+++ b/sound/oss/btaudio.c
@@ -927,6 +927,10 @@ static int __devinit btaudio_probe(struc
 	bta->mem  = pci_resource_start(pci_dev,0);
 	bta->mmio = ioremap(pci_resource_start(pci_dev,0),
 			    pci_resource_len(pci_dev,0));
+	if (!bta->mmio) {
+		rc = -EIO;
+		goto fail1;
+	}
 
 	bta->source     = 1;
 	bta->bits       = 8;
@@ -1019,6 +1023,7 @@ static int __devinit btaudio_probe(struc
 		unregister_sound_dsp(bta->dsp_digital);
  fail2:
         free_irq(bta->irq,bta);	
+	iounmap(bta->mmio);
  fail1:
 	kfree(bta);
  fail0:
@@ -1047,6 +1052,8 @@ static void __devexit btaudio_remove(str
 	}
 
 	/* free resources */
+	if (bta->mmio)
+		iounmap(bta->mmio);
 	free_buffer(bta);
         free_irq(bta->irq,bta);
 	release_mem_region(pci_resource_start(pci_dev,0),