tree 534c4b3597004503d28f1c191eaddf617ed123ae
parent c2d86b1cd64c5db8948119761008ff337c688d96
author Pierre Yves MORDRET <pierre-yves.mordret@st.com> 1520959324 +0100
committer Vinod Koul <vinod.koul@intel.com> 1522822776 +0530

dmaengine: stm32-dma: fix max items per transfer

Having 0 in item counter register is valid and stands for a "No or Ended
transfer". Therefore valid transfer starts from @+0 to @+0xFFFE leading to
unaligned scatter gather at boundary. Thus it's safer to round down this
value on its FIFO size (16 Bytes).

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>