From: Richard Zhu Date: Sat, 20 Feb 2021 02:49:48 +0000 (+0800) Subject: PCI: imx6: Limit DBI register length for imx6qp PCIe X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7a289a164c734f53178607c24a063551cabd76d9;p=linux.git PCI: imx6: Limit DBI register length for imx6qp PCIe 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. Link: https://lore.kernel.org/r/1613789388-2495-2-git-send-email-hongxing.zhu@nxp.com Signed-off-by: Richard Zhu Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Reviewed-by: Lucas Stach Reviewed-by: Krzysztof Wilczyński --- diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 035fb622cafaf..dc48dd7cd7c58 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1173,6 +1173,7 @@ 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,