From e59bf547a7dd366f93bfebb7487959580ca6c0ec Mon Sep 17 00:00:00 2001 From: Martin Povišer Date: Thu, 27 Oct 2022 11:57:58 +0200 Subject: ASoC: tas2770: Fix set_tdm_slot in case of single slot MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There's a special branch in the set_tdm_slot op for the case of nslots being 1, but: (1) That branch can never work (there's a check for tx_mask being non-zero, later there's another check for it *being* zero; one or the other always throws -EINVAL). (2) The intention of the branch seems to be what the general other branch reduces to in case of nslots being 1. For those reasons remove the 'nslots being 1' special case. Fixes: 1a476abc723e ("tas2770: add tas2770 smart PA kernel driver") Suggested-by: Jos Dehaes Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20221027095800.16094-1-povik+lin@cutebit.org Signed-off-by: Mark Brown --- sound/soc/codecs/tas2770.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) (limited to 'sound/soc') diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c index b6765235a4b3..8557759acb1f 100644 --- a/sound/soc/codecs/tas2770.c +++ b/sound/soc/codecs/tas2770.c @@ -395,21 +395,13 @@ static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, if (tx_mask == 0 || rx_mask != 0) return -EINVAL; - if (slots == 1) { - if (tx_mask != 1) - return -EINVAL; - - left_slot = 0; - right_slot = 0; + left_slot = __ffs(tx_mask); + tx_mask &= ~(1 << left_slot); + if (tx_mask == 0) { + right_slot = left_slot; } else { - left_slot = __ffs(tx_mask); - tx_mask &= ~(1 << left_slot); - if (tx_mask == 0) { - right_slot = left_slot; - } else { - right_slot = __ffs(tx_mask); - tx_mask &= ~(1 << right_slot); - } + right_slot = __ffs(tx_mask); + tx_mask &= ~(1 << right_slot); } if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) -- cgit v1.2.3