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

Richard Zhu hongxing.zhu at nxp.com
Fri Feb 19 21:49:48 EST 2021

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 at nxp.com>
Reviewed-by: Lucas Stach <l.stach at pengutronix.de>
Reviewed-by: Krzysztof Wilczyński <kw at linux.com>
 drivers/pci/controller/dwc/pci-imx6.c | 1 +
 1 file changed, 1 insertion(+)

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 |
+		.dbi_length = 0x200,
 	[IMX7D] = {
 		.variant = IMX7D,

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