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authorGustavo Pimentel2021-02-18 20:04:08 +0100
committerVinod Koul2021-03-16 22:58:54 +0530
commitb671d098a97f59d6056b34e0a759ec976325c216 (patch)
tree9b8e3829438aed82643f3287d7c863cc1b93ae52 /drivers/dma
parentcb498d7f3b086bcfab642e38aa80600dcebe0e0a (diff)
dmaengine: dw-edma: Revert fix scatter-gather address calculation
Reverting the applied patch because it caused a regression on ARC700 platform (32 bits). Fixes: 05655541c950 ("dmaengine: dw-edma: Fix scatter-gather address calculation") Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Link: https://lore.kernel.org/r/1778422e389fe40032e216b59b1b992c61ec9887.1613674948.git.gustavo.pimentel@synopsys.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dw-edma/dw-edma-core.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index 0793df12401f..53289927dd0d 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -429,7 +429,8 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
if (xfer->type == EDMA_XFER_CYCLIC) {
burst->dar = xfer->xfer.cyclic.paddr;
} else if (xfer->type == EDMA_XFER_SCATTER_GATHER) {
- burst->dar = dst_addr;
+ src_addr += sg_dma_len(sg);
+ burst->dar = sg_dma_address(sg);
/* Unlike the typical assumption by other
* drivers/IPs the peripheral memory isn't
* a FIFO memory, in this case, it's a
@@ -443,7 +444,8 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
if (xfer->type == EDMA_XFER_CYCLIC) {
burst->sar = xfer->xfer.cyclic.paddr;
} else if (xfer->type == EDMA_XFER_SCATTER_GATHER) {
- burst->sar = src_addr;
+ dst_addr += sg_dma_len(sg);
+ burst->sar = sg_dma_address(sg);
/* Unlike the typical assumption by other
* drivers/IPs the peripheral memory isn't
* a FIFO memory, in this case, it's a
@@ -455,8 +457,6 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer)
}
if (xfer->type == EDMA_XFER_SCATTER_GATHER) {
- src_addr += sg_dma_len(sg);
- dst_addr += sg_dma_len(sg);
sg = sg_next(sg);
} else if (xfer->type == EDMA_XFER_INTERLEAVED &&
xfer->xfer.il->frame_size > 0) {