Several hw_params functions narrows the interval via min/max rule in the very similar way, so factor out those into a helper function and use commonly.
No functional changes, just minor code refactoring.
Tested-by: Keith Milner kamilner@superlative.org Tested-by: Dylan Robinson dylan_robinson@motu.com Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/usb/pcm.c | 110 ++++++++++++++++++++------------------------------------ 1 file changed, 38 insertions(+), 72 deletions(-)
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 6d1f5277cd90..ecc6bf9b42f0 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1121,6 +1121,36 @@ static int hw_check_valid_format(struct snd_usb_substream *subs, return 1; }
+static int apply_hw_params_minmax(struct snd_interval *it, unsigned int rmin, + unsigned int rmax) +{ + int changed; + + if (rmin > rmax) { + hwc_debug(" --> get empty\n"); + it->empty = 1; + return -EINVAL; + } + + changed = 0; + if (it->min < rmin) { + it->min = rmin; + it->openmin = 0; + changed = 1; + } + if (it->max > rmax) { + it->max = rmax; + it->openmax = 0; + changed = 1; + } + if (snd_interval_checkempty(it)) { + it->empty = 1; + return -EINVAL; + } + hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); + return changed; +} + static int hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { @@ -1128,7 +1158,6 @@ static int hw_rule_rate(struct snd_pcm_hw_params *params, struct audioformat *fp; struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); unsigned int rmin, rmax, r; - int changed; int i;
hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); @@ -1151,29 +1180,7 @@ static int hw_rule_rate(struct snd_pcm_hw_params *params, } }
- if (rmin > rmax) { - hwc_debug(" --> get empty\n"); - it->empty = 1; - return -EINVAL; - } - - changed = 0; - if (it->min < rmin) { - it->min = rmin; - it->openmin = 0; - changed = 1; - } - if (it->max > rmax) { - it->max = rmax; - it->openmax = 0; - changed = 1; - } - if (snd_interval_checkempty(it)) { - it->empty = 1; - return -EINVAL; - } - hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); - return changed; + return apply_hw_params_minmax(it, rmin, rmax); }
@@ -1184,48 +1191,18 @@ static int hw_rule_channels(struct snd_pcm_hw_params *params, struct audioformat *fp; struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); unsigned int rmin, rmax; - int changed;
hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); - changed = 0; - rmin = rmax = 0; + rmin = UINT_MAX; + rmax = 0; list_for_each_entry(fp, &subs->fmt_list, list) { if (!hw_check_valid_format(subs, params, fp)) continue; - if (changed++) { - if (rmin > fp->channels) - rmin = fp->channels; - if (rmax < fp->channels) - rmax = fp->channels; - } else { - rmin = fp->channels; - rmax = fp->channels; - } + rmin = min(rmin, fp->channels); + rmax = max(rmax, fp->channels); }
- if (!changed) { - hwc_debug(" --> get empty\n"); - it->empty = 1; - return -EINVAL; - } - - changed = 0; - if (it->min < rmin) { - it->min = rmin; - it->openmin = 0; - changed = 1; - } - if (it->max > rmax) { - it->max = rmax; - it->openmax = 0; - changed = 1; - } - if (snd_interval_checkempty(it)) { - it->empty = 1; - return -EINVAL; - } - hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); - return changed; + return apply_hw_params_minmax(it, rmin, rmax); }
static int hw_rule_format(struct snd_pcm_hw_params *params, @@ -1267,7 +1244,6 @@ static int hw_rule_period_time(struct snd_pcm_hw_params *params, struct snd_interval *it; unsigned char min_datainterval; unsigned int pmin; - int changed;
it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); @@ -1283,18 +1259,8 @@ static int hw_rule_period_time(struct snd_pcm_hw_params *params, return -EINVAL; } pmin = 125 * (1 << min_datainterval); - changed = 0; - if (it->min < pmin) { - it->min = pmin; - it->openmin = 0; - changed = 1; - } - if (snd_interval_checkempty(it)) { - it->empty = 1; - return -EINVAL; - } - hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); - return changed; + + return apply_hw_params_minmax(it, pmin, UINT_MAX); }
/* apply PCM hw constraints from the concurrent sync EP */