[ALSA] Fix races in irq handler and ioremap

Call ioremap before request_irq for avoiding possible races
in the irq handler.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 7 insertions, 7 deletions

diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c
index 8c150eab45b6..e77a4ce314b7 100644
--- a/sound/pci/cs4281.c
+++ b/sound/pci/cs4281.c
@@ -1379,6 +1379,13 @@ static int __devinit snd_cs4281_create(struct snd_card *card,
         chip->ba0_addr = pci_resource_start(pci, 0);
         chip->ba1_addr = pci_resource_start(pci, 1);
 
+        chip->ba0 = ioremap_nocache(chip->ba0_addr, pci_resource_len(pci, 0));
+        chip->ba1 = ioremap_nocache(chip->ba1_addr, pci_resource_len(pci, 1));
+        if (!chip->ba0 || !chip->ba1) {
+                snd_cs4281_free(chip);
+                return -ENOMEM;
+        }
+        
         if (request_irq(pci->irq, snd_cs4281_interrupt, SA_INTERRUPT|SA_SHIRQ,
                         "CS4281", chip)) {
                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
@@ -1387,13 +1394,6 @@ static int __devinit snd_cs4281_create(struct snd_card *card,
         }
         chip->irq = pci->irq;
 
-        chip->ba0 = ioremap_nocache(chip->ba0_addr, pci_resource_len(pci, 0));
-        chip->ba1 = ioremap_nocache(chip->ba1_addr, pci_resource_len(pci, 1));
-        if (!chip->ba0 || !chip->ba1) {
-                snd_cs4281_free(chip);
-                return -ENOMEM;
-        }
-        
         tmp = snd_cs4281_chip_init(chip);
         if (tmp) {
                 snd_cs4281_free(chip);