This is a note to let you know that I've just added the patch titled
dmaengine: ioat: use PCI core macros for PCIe Capability
to the 5.10-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:
dmaengine-ioat-use-pci-core-macros-for-pcie-capabili.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 93728597d9d45b40379528a950441f05a3fe7f26
Author: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Date: Tue Mar 7 15:46:15 2023 -0600
dmaengine: ioat: use PCI core macros for PCIe Capability
[ Upstream commit 8f6707d0773be31972768abd6e0bf7b8515b5b1a ]
The PCIe Capability is defined by the PCIe spec, so use the PCI_EXP_DEVCTL
macros defined by the PCI core instead of defining copies in IOAT. This
makes it easier to find all uses of the PCIe Device Control register. No
functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230307214615.887354-1-helgaas@xxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Stable-dep-of: f0dc9fda2e0e ("dmaengine: ioatdma: Fix error path in ioat3_dma_probe()")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index 6c27980a5ec8f..ed4910e3bc2ac 100644
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -1190,13 +1190,13 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca)
ioat_dma->dca = ioat_dca_init(pdev, ioat_dma->reg_base);
/* disable relaxed ordering */
- err = pcie_capability_read_word(pdev, IOAT_DEVCTRL_OFFSET, &val16);
+ err = pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &val16);
if (err)
return pcibios_err_to_errno(err);
/* clear relaxed ordering enable */
- val16 &= ~IOAT_DEVCTRL_ROE;
- err = pcie_capability_write_word(pdev, IOAT_DEVCTRL_OFFSET, val16);
+ val16 &= ~PCI_EXP_DEVCTL_RELAX_EN;
+ err = pcie_capability_write_word(pdev, PCI_EXP_DEVCTL, val16);
if (err)
return pcibios_err_to_errno(err);
diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h
index f55a5f92f1857..54cf0ad39887b 100644
--- a/drivers/dma/ioat/registers.h
+++ b/drivers/dma/ioat/registers.h
@@ -14,13 +14,6 @@
#define IOAT_PCI_CHANERR_INT_OFFSET 0x180
#define IOAT_PCI_CHANERRMASK_INT_OFFSET 0x184
-/* PCIe config registers */
-
-/* EXPCAPID + N */
-#define IOAT_DEVCTRL_OFFSET 0x8
-/* relaxed ordering enable */
-#define IOAT_DEVCTRL_ROE 0x10
-
/* MMIO Device Registers */
#define IOAT_CHANCNT_OFFSET 0x00 /* 8-bit */
