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From: Gustavo Pimentel <Gustavo.Pimentel@synopsys.com>
To: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	dmaengine@vger.kernel.org, Vinod Koul <vkoul@kernel.org>,
	Dan Williams <dan.j.williams@intel.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Gustavo Pimentel <Gustavo.Pimentel@synopsys.com>
Subject: [PATCH v4 14/15] dmaengine: dw-edma: Revert fix scatter-gather address calculation
Date: Wed,  3 Feb 2021 22:58:05 +0100	[thread overview]
Message-ID: <d936e828ff186d7f4cb6a75ca7a38a91a1f4fd46.1612389406.git.gustavo.pimentel@synopsys.com> (raw)
In-Reply-To: <cover.1612389406.git.gustavo.pimentel@synopsys.com>
In-Reply-To: <cover.1612389406.git.gustavo.pimentel@synopsys.com>

Reverting the applied patch because it caused a regression on
ARC700 platform (32 bits).

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
 drivers/dma/dw-edma/dw-edma-core.c | 8 ++++----
 1 file 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 a299eed..c198451 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) {
-- 
2.7.4


  parent reply	other threads:[~2021-02-03 22:00 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-03 21:57 [PATCH v4 00/15] dmaengine: dw-edma: HDMA support Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 01/15] dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures Gustavo Pimentel
2021-02-09  6:29   ` kernel test robot
2021-02-03 21:57 ` [PATCH v4 02/15] dmaengine: dw-edma: Fix comments offset characters' alignment Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 03/15] dmaengine: dw-edma: Add support for the HDMA feature Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 04/15] PCI: Add pci_find_vsec_capability() to find a specific VSEC Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 05/15] dmaengine: dw-edma: Add PCIe VSEC data retrieval support Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 06/15] dmaengine: dw-edma: Add device_prep_interleave_dma() support Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 07/15] dmaengine: dw-edma: Improve number of channels check Gustavo Pimentel
2021-02-03 21:57 ` [PATCH v4 08/15] dmaengine: dw-edma: Reorder variables to keep consistency Gustavo Pimentel
2021-02-03 21:58 ` [PATCH v4 09/15] dmaengine: dw-edma: Improve the linked list and data blocks definition Gustavo Pimentel
2021-02-03 21:58 ` [PATCH v4 10/15] dmaengine: dw-edma: Change linked list and data blocks offset and sizes Gustavo Pimentel
2021-02-03 21:58 ` [PATCH v4 11/15] dmaengine: dw-edma: Move struct dentry variable from static definition into dw_edma struct Gustavo Pimentel
2021-02-03 21:58 ` [PATCH v4 12/15] dmaengine: dw-edma: Fix crash on loading/unloading driver Gustavo Pimentel
2021-02-03 21:58 ` [PATCH v4 13/15] dmaengine: dw-edma: Change DMA abreviation from lower into upper case Gustavo Pimentel
2021-02-03 21:58 ` Gustavo Pimentel [this message]
2021-02-03 21:58 ` [PATCH v4 15/15] dmaengine: dw-edma: Add pcim_iomap_table return checker Gustavo Pimentel
2021-02-08 19:35   ` Bjorn Helgaas
2021-02-09 15:35     ` Gustavo Pimentel
2021-02-09 18:18       ` Krzysztof Wilczyński
2021-02-09 19:40         ` Krzysztof Wilczyński

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