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| author | Konstantin Ozerkov <kozerkov@parallels.com> | 2011-11-09 16:28:54 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-11-09 18:33:07 +0100 |
| commit | 65c397d6b58d5e401bee7c24608d3a33a220a63a (patch) | |
| tree | 20279d96327c3983dae721169dc501e73f7d0af4 /sound | |
| parent | ALSA: snd_usb_audio: add Logitech HD Webcam c510 to quirk-384 (diff) | |
| download | linux-65c397d6b58d5e401bee7c24608d3a33a220a63a.tar.xz linux-65c397d6b58d5e401bee7c24608d3a33a220a63a.zip | |
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>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/intel8x0.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index c3b9bd0e188e..2d4bb4c9a030 100644 --- 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); |