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ALSA: firewire-digi00x: simplify error path to begin streaming session 

This commit is a part of preparation to perform allocation/release
of isochronous resources in pcm.hw_params/hw_free callbacks.

The caller of begin_session() calls finish_session() in its error path,
thus no need to call finish_session() in error path of begin_session().

This commit simplifies error path of begin_session().

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2019-06-11 22:21:09 +09:00 committed by Takashi Iwai
parent d18b0a6e42
commit 638e19fc46
1 changed files with 3 additions and 6 deletions
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9
sound/firewire/digi00x/digi00x-stream.c
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@ -159,13 +159,13 @@ static int begin_session(struct snd_dg00x *dg00x)
DG00X_ADDR_BASE + DG00X_OFFSET_ISOC_CHANNELS,
&data, sizeof(data), 0);
if (err < 0)
goto error;
return err;
err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST,
DG00X_ADDR_BASE + DG00X_OFFSET_STREAMING_STATE,
&data, sizeof(data), 0);
if (err < 0)
goto error;
return err;
curr = be32_to_cpu(data);
if (curr == 0)
@ -180,15 +180,12 @@ static int begin_session(struct snd_dg00x *dg00x)
DG00X_OFFSET_STREAMING_SET,
&data, sizeof(data), 0);
if (err < 0)
goto error;
break;
msleep(20);
curr--;
}
return 0;
error:
finish_session(dg00x);
return err;
}