[ALSA] Handle the error correctly in SNDCTL_DSP_SETFMT ioctl

Handle the error returned from snd_pcm_oss_get_formats() correctly
in SNDCTL_DSP_SETFMT ioctl handler of PCM OSS emulation.

Signed-off-by: Steven Finney <sfinney@healthhero.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index c5978d6c608..a7567b89179 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -1242,6 +1242,8 @@ static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int for
         
         if (format != AFMT_QUERY) {
                 formats = snd_pcm_oss_get_formats(pcm_oss_file);
+                if (formats < 0)
+                        return formats;
                 if (!(formats & format))
                         format = AFMT_U8;
                 for (idx = 1; idx >= 0; --idx) {