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ASoC: xilinx: Fix reference to PCM buffer address

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commit 42bc62c9f1d3d4880bdc27acb5ab4784209bb0b0 upstream.

PCM buffers might be allocated dynamically when the buffer
preallocation failed or a larger buffer is requested, and it's not
guaranteed that substream->dma_buffer points to the actually used
buffer.  The driver needs to refer to substream->runtime->dma_addr
instead for the buffer address.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20210728112353.6675-4-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai 2021-07-28 13:23:51 +02:00 • committed by Greg Kroah-Hartman
commit aab3fa5446
1 changed files with 2 additions and 2 deletions
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4
sound/soc/xilinx/xlnx_formatter_pcm.c
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@ -461,8 +461,8 @@ static int xlnx_formatter_pcm_hw_params(struct snd_pcm_substream *substream,
stream_data->buffer_size = size;
low = lower_32_bits(substream->dma_buffer.addr);
high = upper_32_bits(substream->dma_buffer.addr);
low = lower_32_bits(runtime->dma_addr);
high = upper_32_bits(runtime->dma_addr);
writel(low, stream_data->mmio + XLNX_AUD_BUFF_ADDR_LSB);
writel(high, stream_data->mmio + XLNX_AUD_BUFF_ADDR_MSB);