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Filename Latest commit message Latest commit date
Bjorn Helgaas 0bd8e62464 PCI/PTM: Inherit Switch Downstream Port PTM settings from Upstream Port 
[ Upstream commit 7b38fd9760f51cc83d80eed2cfbde8b5ead9e93a ]

Except for Endpoints, we enable PTM at enumeration-time.  Previously we did
not account for the fact that Switch Downstream Ports are not permitted to
have a PTM capability; their PTM behavior is controlled by the Upstream
Port (PCIe r5.0, sec 7.9.16).  Since Downstream Ports don't have a PTM
capability, we did not mark them as "ptm_enabled", which meant that
pci_enable_ptm() on an Endpoint failed because there was no PTM path to it.

Mark Downstream Ports as "ptm_enabled" if their Upstream Port has PTM
enabled.

Fixes: eec097d431 ("PCI: Add pci_enable_ptm() for drivers to enable PTM on endpoints")
Reported-by: Aditya Paluri <Venkata.AdityaPaluri@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-24 17:50:31 +02:00
arch powerpc/64s/pgtable: fix an undefined behaviour 2020-06-24 17:50:31 +02:00
block iocost: don't let vrate run wild while there's no saturation signal 2020-06-22 09:31:06 +02:00
certs
crypto crypto: drbg - fix error return code in drbg_alloc_state() 2020-06-17 16:40:31 +02:00
Documentation dt-bindings: display: mediatek: control dpi pins mode to avoid leakage 2020-06-22 09:30:58 +02:00
drivers PCI/PTM: Inherit Switch Downstream Port PTM settings from Upstream Port 2020-06-24 17:50:31 +02:00
fs fuse: copy_file_range should truncate cache 2020-06-24 17:50:30 +02:00
include usb: gadget: core: sync interrupt before unbind the udc 2020-06-24 17:50:16 +02:00
init
ipc
kernel kernel/cpu_pm: Fix uninitted local in cpu_pm 2020-06-22 09:31:22 +02:00
lib kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE 2020-06-22 09:31:12 +02:00
LICENSES
mm mm: call cond_resched() from deferred_init_memmap() 2020-06-22 09:31:14 +02:00
net bpf, sockhash: Fix memory leak when unlinking sockets in sock_hash_free 2020-06-24 17:50:19 +02:00
samples
scripts mksysmap: Fix the mismatch of '.L' symbols in System.map 2020-06-24 17:50:19 +02:00
security apparmor: fix nnp subset test for unconfined 2020-06-24 17:50:20 +02:00
sound ASoC: Intel: bytcr_rt5640: Add quirk for Toshiba Encore WT8-A tablet 2020-06-24 17:50:29 +02:00
tools perf symbols: Fix kernel maps for kcore and eBPF 2020-06-22 09:31:27 +02:00
usr
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2020-06-17 16:40:38 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
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Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.48 2020-06-22 09:31:27 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.