Commit 26eb5a9a authored by Charles Keepax's avatar Charles Keepax Committed by Mark Brown

ASoC: arizona: Exit startup early if no runtime

commit 9b8ef9f6 ("ASoC: dapm: Add startup & shutdown for dai_links")

Added support for calling startup on CODEC to CODEC links, however this
is called with a NULL runtime pointer. There isn't really a sensible way
to pass a valid runtime pointer to a CODEC to CODEC link at the moment,
so we need to make the startup function safe for NULL runtimes.

This patch returns from the Arizona startup function early if there is no
runtime, this is perfectly safe as all the startup function does is set
the PCM constraints for user-space which arn't relevant to a CODEC to
CODEC link anyway.
Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e116615b
...@@ -1494,6 +1494,9 @@ static int arizona_startup(struct snd_pcm_substream *substream, ...@@ -1494,6 +1494,9 @@ static int arizona_startup(struct snd_pcm_substream *substream,
const struct snd_pcm_hw_constraint_list *constraint; const struct snd_pcm_hw_constraint_list *constraint;
unsigned int base_rate; unsigned int base_rate;
if (!substream->runtime)
return 0;
switch (dai_priv->clk) { switch (dai_priv->clk) {
case ARIZONA_CLK_SYSCLK: case ARIZONA_CLK_SYSCLK:
base_rate = priv->sysclk; base_rate = priv->sysclk;
......
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