ASoC: amd: ps: fix byte count return value for invalid SoundWire manager instance

acp_get_byte_count() function should return zero bytes instead of
-EINVAL for invalid SoundWire manager instance.

Fixes: f722917350ee ("ASoC: amd: ps: add SoundWire dma driver dma ops")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230626105356.2580125-5-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/ps/ps-sdw-dma.c b/sound/soc/amd/ps/ps-sdw-dma.c
index 000ab5d96815e2c12b5b36efc2c096fbdc537b33..324c80fca67284fbff1691f0263d6be21f80333c 100644 (file)
--- a/sound/soc/amd/ps/ps-sdw-dma.c
+++ b/sound/soc/amd/ps/ps-sdw-dma.c
@@ -318,12 +318,13 @@ static u64 acp63_sdw_get_byte_count(struct acp_sdw_dma_stream *stream, void __io
                pos_high_reg = sdw1_dma_ring_buf_reg[stream->stream_id].pos_high_reg;
                break;
        default:
-               return -EINVAL;
+               goto POINTER_RETURN_BYTES;
        }
        if (pos_low_reg) {
                byte_count.bcount.high = readl(acp_base + pos_high_reg);
                byte_count.bcount.low = readl(acp_base + pos_low_reg);
        }
+POINTER_RETURN_BYTES:
        return byte_count.bytescount;
 }