Lei Chen b5d85c9684 PCI: Probe bridge window attributes once at enumeration-time ... upstream: 51c48b310183ab6ba5419edfc6a8de889cc04521 pci_bridge_check_ranges() determines whether a bridge supports the optional I/O and prefetchable memory windows and sets the flag bits in the bridge resources. This *could* be done once during enumeration except that the resource allocation code completely clears the flag bits, e.g., in the pci_assign_unassigned_bridge_resources() path. The problem with pci_bridge_check_ranges() in the resource allocation path is that we may allocate resources after devices have been claimed by drivers, and pci_bridge_check_ranges() *changes* the window registers to determine whether they're writable. This may break concurrent accesses to devices behind the bridge. Add a new pci_read_bridge_windows() to determine whether a bridge supports the optional windows, call it once during enumeration, remember the results, and change pci_bridge_check_ranges() so it doesn't touch the bridge windows but sets the flag bits based on those remembered results. Signed-off-by: Lei Chen <lennychen@tencent.com>		2020-12-25 15:38:45 +08:00
..
acpi	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
asm-generic	arm64: implement ftrace with regs by using patchable-function-entry	2020-01-02 12:14:57 +08:00
clocksource	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
crypto	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
drm	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
dt-bindings	arm/myimx6q: init config for myimx6q	2020-01-02 14:50:57 +08:00
keys	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
kvm	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
linux	PCI: Probe bridge window attributes once at enumeration-time	2020-12-25 15:38:45 +08:00
math-emu	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
media	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
memory	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
misc	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
net	Introduce ipvs_mode to share ipvs service and connection between net namespace	2020-09-08 00:42:25 +08:00
pcmcia	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ras	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
rdma	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
scsi	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
soc	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
sound	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
target	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
trace	ext4: optimize the calculation of inode prealloc-list length	2020-09-11 14:22:55 +08:00
uapi	virtblk: print useful info for timeout scenario	2020-12-25 15:38:30 +08:00
video	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
xen	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00