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author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2023-01-13 20:13:46 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 09:33:34 +0100 |
commit | d937ab794b8d432bdd024ec76b1bbdd1184579fe (patch) | |
tree | a9cfcdb318fab4fb40002e2dd926d740c3315684 /drivers/dma/dw-edma | |
parent | bdefbe1b0fd53bc78f4a5387588d878541276330 (diff) | |
download | linux-d937ab794b8d432bdd024ec76b1bbdd1184579fe.tar.gz |
dmaengine: dw-edma: Fix missing src/dst address of interleaved xfers
[ 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>
Diffstat (limited to 'drivers/dma/dw-edma')
-rw-r--r-- | drivers/dma/dw-edma/dw-edma-core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index c54b24ff5206..52bdf04aff51 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -455,6 +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->dar = dst_addr; } } else { burst->dar = dst_addr; @@ -470,6 +472,8 @@ 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; } } |