Commit 5d4d4dfb authored by Amelie Delaunay's avatar Amelie Delaunay Committed by Vinod Koul
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dmaengine: stm32-dma: clean channel configuration when channel is freed 



When dma_channel_release is called, it means that the channel won't be used
anymore with the configuration it had. To ensure a future client can safely
use the channel after it has been released, clean the configuration done
when channel was requested.

Signed-off-by: default avatarAmelie Delaunay <amelie.delaunay@st.com>
Link: https://lore.kernel.org/r/20201120143320.30367-3-amelie.delaunay@st.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent a44d9d72

drivers/dma/stm32-dma.c

+2 −0
Original line number Diff line number Diff line
@@ -1220,6 +1220,8 @@ static void stm32_dma_free_chan_resources(struct dma_chan *c) 
	pm_runtime_put(dmadev->ddev.dev);



	vchan_free_chan_resources(to_virt_chan(c));

	stm32_dma_clear_reg(&chan->chan_reg);

	chan->threshold = 0;

}



static void stm32_dma_desc_free(struct virt_dma_desc *vdesc)