Commit 1225675c authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: PCM: Allow resume only for suspended streams 

snd_pcm_resume() should bail out if the stream isn't in a suspended
state.  Otherwise it'd allow doubly resume.

Link: https://patch.msgid.link/20240624125443.27808-1-tiwai@suse.de


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent c5ab94ea

sound/core/pcm_native.c

+2 −0
Original line number Diff line number Diff line
@@ -1775,6 +1775,8 @@ static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, 
			      snd_pcm_state_t state)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	if (runtime->state != SNDRV_PCM_STATE_SUSPENDED)

		return -EBADFD;

	if (!(runtime->info & SNDRV_PCM_INFO_RESUME))

		return -ENOSYS;

	runtime->trigger_master = substream;