![]() Bit 7 of the "Header Type" register indicates a multi-function device when set. Bits 0-6 contain encoded values, where 0x1 indicates a PCI-PCI bridge. It is incorrect to test this as though it were a mask. For example, while the PCI 3.0 spec only defines values 0x0, 0x1, and 0x2, it's conceivable that a future spec could define 0x3 to mean something else; then tests for "(hdr_type & 0x7f) & PCI_HEADER_TYPE_BRIDGE" would incorrectly succeed for this new 0x3 header type. Test bits 0-6 of the Header Type for equality with PCI_HEADER_TYPE_BRIDGE. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
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.. | ||
aer | ||
aspm.c | ||
Kconfig | ||
Makefile | ||
pme.c | ||
portdrv.h | ||
portdrv_acpi.c | ||
portdrv_bus.c | ||
portdrv_core.c | ||
portdrv_pci.c |