@@ -3326,7 +3326,10 @@ static int snd_soc_platform_drv_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_platform *platform = rtd->platform;
- return platform->driver->pcm_new(rtd);
+ if (platform->driver->pcm_new)
+ return platform->driver->pcm_new(rtd);
+ else
+ return 0;
}
static void snd_soc_platform_drv_pcm_free(struct snd_pcm *pcm)
@@ -3334,7 +3337,8 @@ static void snd_soc_platform_drv_pcm_free(struct snd_pcm *pcm)
struct snd_soc_pcm_runtime *rtd = pcm->private_data;
struct snd_soc_platform *platform = rtd->platform;
- platform->driver->pcm_free(pcm);
+ if (platform->driver->pcm_free)
+ platform->driver->pcm_free(pcm);
}
/**
The patch ASoC: don't dereference NULL pcm_{new,free} has been applied to the asoc tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From d6c098a1db468b7fd4635e831f276851dfd8852c Mon Sep 17 00:00:00 2001 From: Brian Norris <briannorris@chromium.org> Date: Wed, 8 Mar 2017 15:18:54 -0800 Subject: [PATCH] ASoC: don't dereference NULL pcm_{new,free} Not all platform drivers have pcm_{new,free} callbacks. Seen with a "snd-soc-dummy" codec from sound/soc/rockchip/rk3399_gru_sound.c. Fixes: 99b04f4c4051 ("ASoC: add Component level pcm_new/pcm_free") Signed-off-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org> --- sound/soc/soc-core.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)