4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Sakamoto o-takashi@sakamocchi.jp
commit 3d16200a3e55a39caa1c88419cb559c00316f721 upstream.
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: 76fdb3a9e13a ('ALSA: fireface: add support for Fireface 400') Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/firewire/fireface/ff-protocol-ff400.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/firewire/fireface/ff-protocol-ff400.c +++ b/sound/firewire/fireface/ff-protocol-ff400.c @@ -152,7 +152,7 @@ static int ff400_switch_fetching_mode(st 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