ALSA: intel8x0: move virtual environment detection code into one place

This is refactoring patch: preparation for add improved detection code.
Now all detection code placed in one place.

Signed-off-by: Konstantin Ozerkov <kozerkov@parallels.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index c3b9bd0..2d4bb4c 100644 (file)
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2937,6 +2937,24 @@ static unsigned int sis_codec_bits[3] = {
        ICH_PCR, ICH_SCR, ICH_SIS_TCR
 };
 
+static int __devinit snd_intel8x0_inside_vm(void)
+{
+       int result = inside_vm;
+
+       if (result < 0) {
+               /* detect KVM and Parallels virtual environments */
+               result = kvm_para_available();
+#if defined(__i386__) || defined(__x86_64__)
+               result = result || boot_cpu_has(X86_FEATURE_HYPERVISOR);
+#endif
+       }
+
+       if (result)
+               printk(KERN_INFO "intel8x0: enable KVM optimization\n");
+
+       return result;
+}
+
 static int __devinit snd_intel8x0_create(struct snd_card *card,
                                         struct pci_dev *pci,
                                         unsigned long device_type,
@@ -3004,9 +3022,7 @@ static int __devinit snd_intel8x0_create(struct snd_card *card,
        if (xbox)
                chip->xbox = 1;
 
-       chip->inside_vm = inside_vm;
-       if (inside_vm)
-               printk(KERN_INFO "intel8x0: enable KVM optimization\n");
+       chip->inside_vm = snd_intel8x0_inside_vm();
 
        if (pci->vendor == PCI_VENDOR_ID_INTEL &&
            pci->device == PCI_DEVICE_ID_INTEL_440MX)
@@ -3250,14 +3266,6 @@ static int __devinit snd_intel8x0_probe(struct pci_dev *pci,
                        buggy_irq = 0;
        }
 
-       if (inside_vm < 0) {
-               /* detect KVM and Parallels virtual environments */
-               inside_vm = kvm_para_available();
-#if defined(__i386__) || defined(__x86_64__)
-               inside_vm = inside_vm || boot_cpu_has(X86_FEATURE_HYPERVISOR);
-#endif
-       }
-
        if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data,
                                       &chip)) < 0) {
                snd_card_free(card);