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authorTakashi Iwai <tiwai@suse.de>2020-11-23 11:53:15 +0300
committerTakashi Iwai <tiwai@suse.de>2020-11-23 17:12:36 +0300
commit1865211d6789e8404c75278754f0fa4735165600 (patch)
treeb4cf3ccca7e0b2fcd5969e1426a7746f82699f04 /sound/usb
parentf6581c0e5d297cc1e0d7eb7c2603097f532e629a (diff)
downloadlinux-1865211d6789e8404c75278754f0fa4735165600.tar.xz
ALSA: usb-audio: Move snd_usb_autoresume() call out of setup_hw_info()
This is a preliminary work for the upcoming hw-constraint change for the implicit feedback mode. Currently snd_usb_autoresume() is called at the end of setup_hwinfo(). It's a bit confusing; because of this implicit refcount usage, the caller side needs to call snd_usb_autosuspend() later in the error path although it's not seen inside the function. Instead, it's clearer to call both snd_usb_autoresume() and suspend() in the very same function. It's only refactoring and no functional changes. Tested-by: Keith Milner <kamilner@superlative.org> Tested-by: Dylan Robinson <dylan_robinson@motu.com> Link: https://lore.kernel.org/r/20201123085347.19667-10-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/pcm.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index fea2764163b4..78933b6571d0 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -1378,7 +1378,7 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre
return err;
}
- return snd_usb_autoresume(subs->stream->chip);
+ return 0;
}
static int snd_usb_pcm_open(struct snd_pcm_substream *substream)
@@ -1402,11 +1402,14 @@ static int snd_usb_pcm_open(struct snd_pcm_substream *substream)
subs->dsd_dop.marker = 1;
ret = setup_hw_info(runtime, subs);
- if (ret == 0) {
- ret = snd_media_stream_init(subs, as->pcm, direction);
- if (ret)
- snd_usb_autosuspend(subs->stream->chip);
- }
+ if (ret < 0)
+ return ret;
+ ret = snd_usb_autoresume(subs->stream->chip);
+ if (ret < 0)
+ return ret;
+ ret = snd_media_stream_init(subs, as->pcm, direction);
+ if (ret < 0)
+ snd_usb_autosuspend(subs->stream->chip);
return ret;
}