[PATCH 4.19 135/142] ALSA: fireface: fix reference to wrong register for clock configuration

Greg Kroah-Hartman
2018-12-14T12:06:49Z

From: Takashi Sakamoto <o-takashi@sakamocchi.jp>

commit fa9c98e4b975bb3192ed6af09d9fa282ed3cd8a0 upstream.

In an initial commit, 'SYNC_STATUS' register is referred to get
clock configuration, however this is wrong, according to my local
note at hand for reverse-engineering about packet dump. It should
be 'CLOCK_CONFIG' register. Actually, ff400_dump_clock_config()
is correctly programmed.

This commit fixes 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
@@ -30,7 +30,7 @@ static int ff400_get_clock(struct snd_ff
int err;

err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
- FF400_SYNC_STATUS, &reg, sizeof(reg), 0);
+ FF400_CLOCK_CONFIG, &reg, sizeof(reg), 0);
if (err < 0)
return err;
data = le32_to_cpu(reg);