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dmaengine: dw-edma: Fix missing src/dst address of interleaved xfers

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[ Upstream commit 13b6299cf66165a442089fa895a7f70250703584 ]

Interleaved DMA transfer support was added by 85e7518f42c8 ("dmaengine:
dw-edma: Add device_prep_interleave_dma() support"), but depending on the
selected channel, either source or destination address are left
uninitialized which was obviously wrong.

Initialize the destination address of the eDMA burst descriptors for
DEV_TO_MEM interleaved operations and the source address for MEM_TO_DEV
operations.

Link: https://lore.kernel.org/r/20230113171409.30470-5-Sergey.Semin@baikalelectronics.ru
Fixes: 85e7518f42c8 ("dmaengine: dw-edma: Add device_prep_interleave_dma() support")
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Serge Semin 2023-01-13 20:13:46 +03:00 committed by Greg Kroah-Hartman
parent 834af318db
commit 49bf49312b
1 changed files with 4 additions and 0 deletions
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4
drivers/dma/dw-edma/dw-edma-core.c
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@ -438,6 +438,8 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
* and destination addresses are increased
* by the same portion (data length)
*/
} else if (xfer->type == EDMA_XFER_INTERLEAVED) {
burst->dar = dst_addr;
}
} else {
burst->dar = dst_addr;
@ -453,6 +455,8 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
* and destination addresses are increased
* by the same portion (data length)
*/
} else if (xfer->type == EDMA_XFER_INTERLEAVED) {
burst->sar = src_addr;
}
}