From: Martin Povišer povik+lin@cutebit.org
[ Upstream commit 6f934afa6a980bb8d3ce73836b1a9922685e50d7 ]
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: eae9f9ce181b ("ASoC: add tas2780 driver") Suggested-by: Jos Dehaes jos.dehaes@gmail.com Signed-off-by: Martin Povišer povik+lin@cutebit.org Link: https://lore.kernel.org/r/20221027095800.16094-3-povik+lin@cutebit.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/codecs/tas2780.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-)
diff --git a/sound/soc/codecs/tas2780.c b/sound/soc/codecs/tas2780.c index a6db6f0e5431..afdf0c863aa1 100644 --- a/sound/soc/codecs/tas2780.c +++ b/sound/soc/codecs/tas2780.c @@ -380,20 +380,13 @@ static int tas2780_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)