Commit 3d16200a authored Dec 15, 2018 by Takashi Sakamoto Committed by Takashi Iwai Dec 16, 2018

ALSA: fireface: fix for state to fetch PCM frames



According to my memo at hand and saved records, writing 0x00000001 to
SND_FF_REG_FETCH_PCM_FRAMES disables fetching PCM frames in corresponding
channel, however current implement uses reversed logic. This results in
muted volume in device side during playback.

This commit corrects the bug.

Cc: <stable@vger.kernel.org> # v4.12+
Fixes: 76fdb3a9 ('ALSA: fireface: add support for Fireface 400')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent 5ef108c5

sound/firewire/fireface/ff-protocol-ff400.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -86,7 +86,7 @@ static int ff400_switch_fetching_mode(struct snd_ff *ff, bool enable)
		if (reg == NULL)
		return -ENOMEM;

		if (enable) {
		if (!enable) {
		/*
		* Each quadlet is corresponding to data channels in a data
		* blocks in reverse order. Precisely, quadlets for available

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