ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*()

commit 6665bb30a6b1a4a853d52557c05482ee50e71391 upstream.

A couple of calls in snd_pcm_oss_change_params_locked() ignore the
possible errors.  Catch those errors and abort the operation for
avoiding further problems.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211201073606.11660-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 89c4910..20a0a47 100644 (file)
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -884,8 +884,15 @@ static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
                err = -EINVAL;
                goto failure;
        }
-       choose_rate(substream, sparams, runtime->oss.rate);
-       snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL);
+
+       err = choose_rate(substream, sparams, runtime->oss.rate);
+       if (err < 0)
+               goto failure;
+       err = snd_pcm_hw_param_near(substream, sparams,
+                                   SNDRV_PCM_HW_PARAM_CHANNELS,
+                                   runtime->oss.channels, NULL);
+       if (err < 0)
+               goto failure;
 
        format = snd_pcm_oss_format_from(runtime->oss.format);