diff options
Diffstat (limited to 'sound/usb')
-rw-r--r-- | sound/usb/usbaudio.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 2ab83129d9b0..80863093d2c8 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c | |||
@@ -2524,7 +2524,6 @@ static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioform | |||
2524 | * build the rate table and bitmap flags | 2524 | * build the rate table and bitmap flags |
2525 | */ | 2525 | */ |
2526 | int r, idx; | 2526 | int r, idx; |
2527 | unsigned int nonzero_rates = 0; | ||
2528 | 2527 | ||
2529 | fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); | 2528 | fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); |
2530 | if (fp->rate_table == NULL) { | 2529 | if (fp->rate_table == NULL) { |
@@ -2532,24 +2531,26 @@ static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioform | |||
2532 | return -1; | 2531 | return -1; |
2533 | } | 2532 | } |
2534 | 2533 | ||
2535 | fp->nr_rates = nr_rates; | 2534 | fp->nr_rates = 0; |
2536 | fp->rate_min = fp->rate_max = combine_triple(&fmt[8]); | 2535 | fp->rate_min = fp->rate_max = 0; |
2537 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { | 2536 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { |
2538 | unsigned int rate = combine_triple(&fmt[idx]); | 2537 | unsigned int rate = combine_triple(&fmt[idx]); |
2538 | if (!rate) | ||
2539 | continue; | ||
2539 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ | 2540 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ |
2540 | if (rate == 48000 && nr_rates == 1 && | 2541 | if (rate == 48000 && nr_rates == 1 && |
2541 | chip->usb_id == USB_ID(0x0d8c, 0x0201) && | 2542 | chip->usb_id == USB_ID(0x0d8c, 0x0201) && |
2542 | fp->altsetting == 5 && fp->maxpacksize == 392) | 2543 | fp->altsetting == 5 && fp->maxpacksize == 392) |
2543 | rate = 96000; | 2544 | rate = 96000; |
2544 | fp->rate_table[r] = rate; | 2545 | fp->rate_table[fp->nr_rates] = rate; |
2545 | nonzero_rates |= rate; | 2546 | if (!fp->rate_min || rate < fp->rate_min) |
2546 | if (rate < fp->rate_min) | ||
2547 | fp->rate_min = rate; | 2547 | fp->rate_min = rate; |
2548 | else if (rate > fp->rate_max) | 2548 | if (!fp->rate_max || rate > fp->rate_max) |
2549 | fp->rate_max = rate; | 2549 | fp->rate_max = rate; |
2550 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | 2550 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); |
2551 | fp->nr_rates++; | ||
2551 | } | 2552 | } |
2552 | if (!nonzero_rates) { | 2553 | if (!fp->nr_rates) { |
2553 | hwc_debug("All rates were zero. Skipping format!\n"); | 2554 | hwc_debug("All rates were zero. Skipping format!\n"); |
2554 | return -1; | 2555 | return -1; |
2555 | } | 2556 | } |