ALSA: usb-audio: Disable sample read check if firmware doesn't give back
commit 9df28edce7
upstream.
Some buggy firmware don't give the current sample rate but leaves
zero. Handle this case more gracefully without warning but just skip
the current rate verification from the next time.
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201218145858.2357-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
parent
b1e3c2fb0f
commit
cd3ff2a46d
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@ -531,6 +531,12 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
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}
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crate = data[0] | (data[1] << 8) | (data[2] << 16);
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if (!crate) {
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dev_info(&dev->dev, "failed to read current rate; disabling the check\n");
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chip->sample_rate_read_error = 3; /* three strikes, see above */
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return 0;
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}
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if (crate != rate) {
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dev_warn(&dev->dev, "current rate %d is different from the runtime rate %d\n", crate, rate);
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// runtime->rate = crate;
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