mirror of
https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git
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65f62b1ca1
In pci_uclass_pre_probe an attempt is made to detect whether the parent
of a device is a PCI device and that the device is thus a bridge. This
was being done by checking whether the parent of the device is of the
UCLASS_ROOT class. This causes problems if the PCI controller is a child
of some other non-PCI node, for example a simple-bus node.
For example, if the device tree contains something like the following
then pci_uclass_pre_probe would incorrectly believe that the PCI
controller is a bridge, with a PCI parent:
/ {
some_child {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <>;
pci_controller: pci@10000000 {
compatible = "my-pci-controller";
device_type = "pci";
reg = <0x10000000 0x2000000>;
};
};
};
Avoid this incorrect detection of bridges by instead checking whether
the parent devices class is UCLASS_PCI and treating a device as a bridge
when this is true, making use of device_is_on_pci_bus to perform this
test.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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|---|---|---|
| .. | ||
| fsl_pci_init.c | ||
| Kconfig | ||
| Makefile | ||
| pci-emul-uclass.c | ||
| pci-uclass.c | ||
| pci.c | ||
| pci_auto.c | ||
| pci_auto_common.c | ||
| pci_auto_old.c | ||
| pci_common.c | ||
| pci_compat.c | ||
| pci_ftpci100.c | ||
| pci_gt64120.c | ||
| pci_indirect.c | ||
| pci_internal.h | ||
| pci_msc01.c | ||
| pci_mvebu.c | ||
| pci_rom.c | ||
| pci_sandbox.c | ||
| pci_sh4.c | ||
| pci_sh7751.c | ||
| pci_sh7780.c | ||
| pci_tegra.c | ||
| pci_x86.c | ||
| pcie_imx.c | ||
| pcie_layerscape.c | ||
| pcie_xilinx.c | ||
| tsi108_pci.c | ||
| w83c553f.c | ||