From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Patrick Talbert <ptalbert@redhat.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Sasha Levin <sashal@kernel.org>,
linux-pci@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 01/37] PCI/ASPM: Do not initialize link state when aspm_disabled is set
Date: Fri, 25 Oct 2019 09:55:25 -0400 [thread overview]
Message-ID: <20191025135603.25093-1-sashal@kernel.org> (raw)
From: Patrick Talbert <ptalbert@redhat.com>
[ Upstream commit 17c91487364fb33797ed84022564ee7544ac4945 ]
Now that ASPM is configured for *all* PCIe devices at boot, a problem is
seen with systems that set the FADT NO_ASPM bit. This bit indicates that
the OS should not alter the ASPM state, but when
pcie_aspm_init_link_state() runs it only checks for !aspm_support_enabled.
This misses the ACPI_FADT_NO_ASPM case because that is setting
aspm_disabled.
The result is systems may hang at boot after 1302fcf; avoidable if they
boot with pcie_aspm=off (sets !aspm_support_enabled).
Fix this by having aspm_init_link_state() check for either
!aspm_support_enabled or acpm_disabled.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201001
Fixes: 1302fcf0d03e ("PCI: Configure *all* devices, not just hot-added ones")
Signed-off-by: Patrick Talbert <ptalbert@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/pcie/aspm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 1117b25fbe0bb..ce218b32724db 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -912,7 +912,7 @@ void pcie_aspm_init_link_state(struct pci_dev *pdev)
struct pcie_link_state *link;
int blacklist = !!pcie_aspm_sanity_check(pdev);
- if (!aspm_support_enabled)
+ if (!aspm_support_enabled || aspm_disabled)
return;
if (pdev->link_state)
--
2.20.1
next reply other threads:[~2019-10-25 13:56 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 13:55 Sasha Levin [this message]
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 02/37] HID: i2c-hid: Add Odys Winbook 13 to descriptor override Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 03/37] ACPI: video: Use vendor backlight on Sony VPCEH3U1E Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 04/37] rseq/selftests: x86: Work-around bogus gcc-8 optimisation Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 05/37] f2fs: fix to do sanity check on valid node/block count Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 06/37] ALSA: hda: Fix race between creating and refreshing sysfs entries Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 07/37] Fixed https://bugzilla.kernel.org/show_bug.cgi?id=202935 allow write on the same file Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 08/37] nvme-pci: fix conflicting p2p resource adds Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 09/37] scsi: qedf: Do not retry ELS request if qedf_alloc_cmd fails Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 10/37] driver core: platform: Fix the usage of platform device name(pdev->name) Sasha Levin
2019-10-26 7:44 ` Greg Kroah-Hartman
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 11/37] KVM: PPC: Book3S HV: Fix lockdep warning when entering the guest Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 12/37] drm/amdgpu/display: Fix reload driver error Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 13/37] powerpc/pseries/hvconsole: Fix stack overread via udbg Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 14/37] scsi: RDMA/srp: Fix a sleep-in-invalid-context bug Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 15/37] scsi: bnx2fc: Only put reference to io_req in bnx2fc_abts_cleanup if cleanup times out Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 16/37] xfrm interface: fix memory leak on creation Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 17/37] drm/msm: stop abusing dma_map/unmap for cache Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 18/37] drm/msm: Use the correct dma_sync calls in msm_gem Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 19/37] net: ipv6: fix listify ip6_rcv_finish in case of forwarding Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 20/37] sch_netem: fix rcu splat in netem_enqueue() Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 21/37] rxrpc: Fix call ref leak Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 22/37] rxrpc: Fix trace-after-put looking at the put peer record Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 23/37] rxrpc: rxrpc_peer needs to hold a ref on the rxrpc_local record Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 24/37] llc: fix sk_buff leak in llc_sap_state_process() Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 25/37] llc: fix sk_buff leak in llc_conn_service() Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 26/37] NFC: pn533: fix use-after-free and memleaks Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 27/37] bonding: fix potential NULL deref in bond_update_slave_arr Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 28/37] net: usb: sr9800: fix uninitialized local variable Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 29/37] jbd2: flush_descriptor(): Do not decrease buffer head's ref count Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 30/37] ath9k: dynack: fix possible deadlock in ath_dynack_node_{de}init Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 31/37] Btrfs: fix hang when loading existing inode cache off disk Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 32/37] Btrfs: fix inode cache block reserve leak on failure to allocate data space Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 33/37] ubi: ubi_wl_get_peb: Increase the number of attempts while getting PEB Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 34/37] RDMA/iwcm: Fix a lock inversion issue Sasha Levin
2019-10-25 13:55 ` [PATCH AUTOSEL 4.19 35/37] ipv6: Handle race in addrconf_dad_work Sasha Levin
2019-10-25 13:56 ` [PATCH AUTOSEL 4.19 36/37] bdi: Do not use freezable workqueue Sasha Levin
2019-10-25 13:56 ` [PATCH AUTOSEL 4.19 37/37] ALSA: hda: Add codec on bus address table lately Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191025135603.25093-1-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=bhelgaas@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=ptalbert@redhat.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox