diff options
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 6 | ||||
| -rw-r--r-- | sound/pci/intel8x0.c | 12 |
2 files changed, 16 insertions, 2 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index 57e82a5fae7..13cba955cb5 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -805,7 +805,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. ac97_quirk - AC'97 workaround for strange hardware See "AC97 Quirk Option" section below. buggy_irq - Enable workaround for buggy interrupts on some - motherboards (default off) + motherboards (default yes on nForce chips, + otherwise off) + buggy_semaphore - Enable workaround for hardwares with buggy + semaphores (e.g. on some ASUS laptops) + (default off) Module supports autoprobe and multiple bus-master chips (max 8). diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index b96f87e7339..47965dfcbee 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -69,6 +69,7 @@ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; static char *ac97_quirk[SNDRV_CARDS]; +static int buggy_semaphore[SNDRV_CARDS]; static int buggy_irq[SNDRV_CARDS]; static int xbox[SNDRV_CARDS]; @@ -86,6 +87,8 @@ module_param_array(ac97_clock, int, NULL, 0444); MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect)."); module_param_array(ac97_quirk, charp, NULL, 0444); MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware."); +module_param_array(buggy_semaphore, bool, NULL, 0444); +MODULE_PARM_DESC(buggy_semaphore, "Enable workaround for hardwares with problematic codec semaphores."); module_param_array(buggy_irq, bool, NULL, 0444); MODULE_PARM_DESC(buggy_irq, "Enable workaround for buggy interrupts on some motherboards."); module_param_array(xbox, bool, NULL, 0444); @@ -367,6 +370,7 @@ struct _snd_intel8x0 { unsigned fix_nocache: 1; /* workaround for 440MX */ unsigned buggy_irq: 1; /* workaround for buggy mobos */ unsigned xbox: 1; /* workaround for Xbox AC'97 detection */ + unsigned buggy_semaphore: 1; /* workaround for buggy codec semaphore */ int spdif_idx; /* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */ unsigned int sdm_saved; /* SDM reg value */ @@ -521,6 +525,9 @@ static int snd_intel8x0_codec_semaphore(intel8x0_t *chip, unsigned int codec) if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0) return -EIO; + if (chip->buggy_semaphore) + return 0; /* just ignore ... */ + /* Anyone holding a semaphore for 1 msec should be shot... */ time = 100; do { @@ -2549,6 +2556,7 @@ struct ich_reg_info { static int __devinit snd_intel8x0_create(snd_card_t * card, struct pci_dev *pci, unsigned long device_type, + int buggy_sem, intel8x0_t ** r_intel8x0) { intel8x0_t *chip; @@ -2606,6 +2614,7 @@ static int __devinit snd_intel8x0_create(snd_card_t * card, chip->card = card; chip->pci = pci; chip->irq = -1; + chip->buggy_semaphore = buggy_sem; if (pci->vendor == PCI_VENDOR_ID_INTEL && pci->device == PCI_DEVICE_ID_INTEL_440MX) @@ -2810,7 +2819,8 @@ static int __devinit snd_intel8x0_probe(struct pci_dev *pci, } } - if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data, &chip)) < 0) { + if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data, + buggy_semaphore[dev], &chip)) < 0) { snd_card_free(card); return err; } |