Unverified Commit 24cdbb79 authored by Richard Fitzgerald's avatar Richard Fitzgerald Committed by Mark Brown
Browse files

ASoC: cs42l42: Validate dai_set_sysclk() frequency 



If the machine driver calls snd_set_sysclk() with an unsupported
SCLK frequency, return an error instead of letting hw_params() fail.

Signed-off-by: default avatarRichard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210805161111.10410-6-rf@opensource.cirrus.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b962bae8

sound/soc/codecs/cs42l42.c

+15 −2
Original line number Diff line number Diff line
@@ -891,11 +891,24 @@ static int cs42l42_set_sysclk(struct snd_soc_dai *dai, 
{

	struct snd_soc_component *component = dai->component;

	struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component);

	int i;



	cs42l42->sclk = freq;

	if (freq == 0) {

		cs42l42->sclk = 0;

		return 0;

	}



	for (i = 0; i < ARRAY_SIZE(pll_ratio_table); i++) {

		if (pll_ratio_table[i].sclk == freq) {

			cs42l42->sclk = freq;

			return 0;

		}

	}



	dev_err(component->dev, "SCLK %u not supported\n", freq);



	return -EINVAL;

}



static int cs42l42_mute_stream(struct snd_soc_dai *dai, int mute, int stream)

{