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dmaengine: mmp_tdma: Do not ignore slave config validation errors

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[ Upstream commit 363c32701c ]

With an invalid dma_slave_config set previously,
mmp_tdma_prep_dma_cyclic() would detect an error whilst configuring the
channel, but proceed happily on:

  [  120.756530] mmp-tdma d42a0800.adma: mmp_tdma: unknown burst size.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20200419164912.670973-2-lkundrak@v3.sk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lubomir Rintel
2020-04-19 18:49:06 +02:00
committed by Greg Kroah-Hartman
parent de76c0d4a0
commit 6c414ddee7
1 changed files with 2 additions and 1 deletions
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3
drivers/dma/mmp_tdma.c
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@@ -443,7 +443,8 @@ static struct dma_async_tx_descriptor *mmp_tdma_prep_dma_cyclic(
if (!desc)
goto err_out;
mmp_tdma_config_write(chan, direction, &tdmac->slave_config);
if (mmp_tdma_config_write(chan, direction, &tdmac->slave_config))
goto err_out;
while (buf < buf_len) {
desc = &tdmac->desc_arr[i];