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[v2] PCI: imx6: Limit DBI register length for imx6qp PCIe

Message ID 1613789388-2495-2-git-send-email-hongxing.zhu@nxp.com
State New
Headers show
Series [v2] PCI: imx6: Limit DBI register length for imx6qp PCIe | expand

Commit Message

Richard Zhu Feb. 20, 2021, 2:49 a.m. UTC
Define the length of the DBI registers and limit config space to its
length. This makes sure that the kernel does not access registers beyond
that point that otherwise would lead to an abort on the i.MX 6QuadPlus.

See commit 075af61c19cd ("PCI: imx6: Limit DBI register length") that
resolves a similar issue on the i.MX 6Quad PCIe.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Krzysztof WilczyƄski <kw@linux.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 0cf1333c0440..853ea8e82952 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1175,6 +1175,7 @@  static const struct imx6_pcie_drvdata drvdata[] = {
 		.variant = IMX6QP,
 		.flags = IMX6_PCIE_FLAG_IMX6_PHY |
 			 IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE,
+		.dbi_length = 0x200,
 	},
 	[IMX7D] = {
 		.variant = IMX7D,