ALSA: ymfpci: fix PCM open error handling

The installation of the minimum period size constraint in the PCM open
callbacks was not checked for errors.  Add this check, and move the call
to the beginning of the function to avoid having to do any cleanups in
the error case.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index ebfbb28c35cc6049dae6056fd5b19e8f564377e0..88c5c5c28d02a6b3b6935b12b6959c8284988f86 100644 (file)
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -897,6 +897,15 @@ static int snd_ymfpci_playback_open_1(struct snd_pcm_substream *substream)
        struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        struct snd_ymfpci_pcm *ypcm;
+       int err;
+
+       runtime->hw = snd_ymfpci_playback;
+       /* FIXME? True value is 256/48 = 5.33333 ms */
+       err = snd_pcm_hw_constraint_minmax(runtime,
+                                          SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+                                          5334, UINT_MAX);
+       if (err < 0)
+               return err;
 
        ypcm = kzalloc(sizeof(*ypcm), GFP_KERNEL);
        if (ypcm == NULL)
@@ -904,11 +913,8 @@ static int snd_ymfpci_playback_open_1(struct snd_pcm_substream *substream)
        ypcm->chip = chip;
        ypcm->type = PLAYBACK_VOICE;
        ypcm->substream = substream;
-       runtime->hw = snd_ymfpci_playback;
        runtime->private_data = ypcm;
        runtime->private_free = snd_ymfpci_pcm_free_substream;
-       /* FIXME? True value is 256/48 = 5.33333 ms */
-       snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 5333, UINT_MAX);
        return 0;
 }
 
@@ -1013,6 +1019,15 @@ static int snd_ymfpci_capture_open(struct snd_pcm_substream *substream,
        struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        struct snd_ymfpci_pcm *ypcm;
+       int err;
+
+       runtime->hw = snd_ymfpci_capture;
+       /* FIXME? True value is 256/48 = 5.33333 ms */
+       err = snd_pcm_hw_constraint_minmax(runtime,
+                                          SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+                                          5334, UINT_MAX);
+       if (err < 0)
+               return err;
 
        ypcm = kzalloc(sizeof(*ypcm), GFP_KERNEL);
        if (ypcm == NULL)
@@ -1022,9 +1037,6 @@ static int snd_ymfpci_capture_open(struct snd_pcm_substream *substream,
        ypcm->substream = substream;    
        ypcm->capture_bank_number = capture_bank_number;
        chip->capture_substream[capture_bank_number] = substream;
-       runtime->hw = snd_ymfpci_capture;
-       /* FIXME? True value is 256/48 = 5.33333 ms */
-       snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 5333, UINT_MAX);
        runtime->private_data = ypcm;
        runtime->private_free = snd_ymfpci_pcm_free_substream;
        snd_ymfpci_hw_start(chip);