Pierre-Yves MORDRET cc832dc8e3 dmaengine: stm32-dma: check whether length is aligned on FIFO threshold ...

When a period length is not multiple of FIFO some data may be stuck
within FIFO.

Burst/FIFO Threshold/Period or buffer length check has to be hardened

In any case DMA will grant any request from client but will degraded
any parameters whether awkward.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

2018-10-02 20:32:15 +05:30

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