This is a note to let you know that I've just added the patch titled
PCI: epf-mhi: Fix the DMA data direction of dma_unmap_single()
to the 6.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-epf-mhi-fix-the-dma-data-direction-of-dma_unmap_.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 919e1c85c5f3239c47900c0d4cc85780d5496f83
Author: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Date: Thu Dec 14 12:03:28 2023 +0530
PCI: epf-mhi: Fix the DMA data direction of dma_unmap_single()
[ Upstream commit 327ec5f70609cf00c6f961073c01857555c6a8eb ]
In the error path of pci_epf_mhi_edma_write() function, the DMA data
direction passed (DMA_FROM_DEVICE) doesn't match the actual direction used
for the data transfer. Fix it by passing the correct one (DMA_TO_DEVICE).
Fixes: 7b99aaaddabb ("PCI: epf-mhi: Add eDMA support")
Reviewed-by: Krzysztof Wilczyński <kw@xxxxxxxxx>
Link: https://lore.kernel.org/r/20231214063328.40657-1-manivannan.sadhasivam@xxxxxxxxxx
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index ec5f4a38178b..6dc918a8a023 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -405,7 +405,7 @@ static int pci_epf_mhi_edma_write(struct mhi_ep_cntrl *mhi_cntrl,
}
err_unmap:
- dma_unmap_single(dma_dev, src_addr, buf_info->size, DMA_FROM_DEVICE);
+ dma_unmap_single(dma_dev, src_addr, buf_info->size, DMA_TO_DEVICE);
err_unlock:
mutex_unlock(&epf_mhi->lock);
