diff options
Diffstat (limited to 'sound/usb/usbaudio.c')
| -rw-r--r-- | sound/usb/usbaudio.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index c69cc6e4f54..2b24496ddec 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -107,7 +107,6 @@ MODULE_PARM_DESC(ignore_ctl_error, #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ #define MAX_URBS 8 #define SYNC_URBS 4 /* always four urbs for sync */ -#define MIN_PACKS_URB 1 /* minimum 1 packet per urb */ #define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */ struct audioformat { @@ -1071,8 +1070,7 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri subs->packs_per_ms = packs_per_ms; if (is_playback) { - urb_packs = nrpacks; - urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB); + urb_packs = max(nrpacks, 1); urb_packs = min(urb_packs, (unsigned int)MAX_PACKS); } else urb_packs = 1; @@ -1093,9 +1091,9 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri total_packs = (total_packs + packs_per_ms - 1) & ~(packs_per_ms - 1); /* we need at least two URBs for queueing */ - if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms) - total_packs = 2 * MIN_PACKS_URB * packs_per_ms; - else { + if (total_packs < 2 * packs_per_ms) { + total_packs = 2 * packs_per_ms; + } else { /* and we don't want too long a queue either */ maxpacks = max((unsigned int)MAX_QUEUE, urb_packs * 2); if (total_packs > maxpacks * packs_per_ms) @@ -1909,7 +1907,7 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre * in the current code assume the 1ms period. */ snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, - 1000 * MIN_PACKS_URB, + 1000, /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX); err = check_hw_params_convention(subs); @@ -3753,7 +3751,7 @@ static int usb_audio_resume(struct usb_interface *intf) static int __init snd_usb_audio_init(void) { - if (nrpacks < MIN_PACKS_URB || nrpacks > MAX_PACKS) { + if (nrpacks < 1 || nrpacks > MAX_PACKS) { printk(KERN_WARNING "invalid nrpacks value.\n"); return -EINVAL; } |