[ALSA] mixart - Check ioremap error

Check ioremap error and handle properly at initialization.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/pci/mixart/mixart.c b/sound/pci/mixart/mixart.c
index ac007cec0879..c5109547f43f 100644
--- a/sound/pci/mixart/mixart.c
+++ b/sound/pci/mixart/mixart.c
@@ -1317,6 +1317,12 @@ static int __devinit snd_mixart_probe(struct pci_dev *pci,
                 mgr->mem[i].phys = pci_resource_start(pci, i);
                 mgr->mem[i].virt = ioremap_nocache(mgr->mem[i].phys,
                                                    pci_resource_len(pci, i));
+                if (!mgr->mem[i].virt) {
+                        printk(KERN_ERR "unable to remap resource 0x%lx\n",
+                               mgr->mem[i].phys);
+                        snd_mixart_free(mgr);
+                        return -EBUSY;
+                }
         }
 
         if (request_irq(pci->irq, snd_mixart_interrupt, IRQF_SHARED,