From: Bjorn Helgaas <helgaas@kernel.org>
To: linux-pci@vger.kernel.org
Cc: Lukas Wunner <lukas@wunner.de>,
linux-kernel@vger.kernel.org, mmyangfl@gmail.com
Subject: Enumeration issue with QCA9005 AR9462
Date: Mon, 20 Aug 2018 18:06:24 -0500 [thread overview]
Message-ID: <20180820230624.GB154536@bhelgaas-glaptop.roam.corp.google.com> (raw)
mmyangfl@gmail.com reported a problem [1]: on v4.17, a QCA9005 AR9462
wifi device was present at boot, but disappeared after suspend/resume.
He/she also tested a recent kernel (5c60a7389d79, from Thu Aug 16),
where the suspend/resume problem doesn't seem to happen, but the wifi
device isn't enumerated correctly at boot-time.
pci 0000:00:1c.3: PCIe Root Port to [bus 03-07]
pci 0000:03:00.0: [1ae9:0101] PCIe Switch Upstream Port to [bus 04-07]
pci 0000:04:00.0: [1ae9:0200] PCIe Switch Downstream Port to [bus 05]
pci 0000:05:00.0: [168c:0034] QCA9005 AR9462 wifi NIC
These messages are extracted from [2]:
[ 0.928714] pciehp 0000:04:00.0:pcie204: Slot #0 AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+ Interlock- NoCompl- LLActRep+
[ 0.928752] pciehp 0000:04:00.0:pcie204: Slot(0-1): Card not present
[ 0.928811] pciehp 0000:04:00.0:pcie204: Slot(0-1): Link Up
[ 0.928815] pciehp 0000:04:00.0:pcie204: Slot(0-1): No adapter
After manually executing:
echo 1 > /sys/devices/pci0000\:00/0000\:00\:1c.3/0000\:03\:00.0/0000\:04\:00.0/rescan
the wifi NIC is discovered correctly:
[ 114.649896] pci 0000:05:00.0: [168c:0034] type 00 class 0x028000
[ 114.649977] pci 0000:05:00.0: reg 0x10: [mem 0xf7400000-0xf747ffff 64bit]
[ 114.650090] pci 0000:05:00.0: reg 0x30: [mem 0xf7480000-0xf748ffff pref]
[1] https://bugzilla.kernel.org/show_bug.cgi?id=200839
[2] https://bugzilla.kernel.org/attachment.cgi?id=277923
next reply other threads:[~2018-08-20 23:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-20 23:06 Bjorn Helgaas [this message]
2018-08-21 5:47 ` Enumeration issue with QCA9005 AR9462 Lukas Wunner
2018-08-21 7:25 ` Lukas Wunner
2018-08-21 16:50 ` Bjorn Helgaas
2018-08-21 20:24 ` Rajat Jain
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=20180820230624.GB154536@bhelgaas-glaptop.roam.corp.google.com \
--to=helgaas@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lukas@wunner.de \
--cc=mmyangfl@gmail.com \
/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;
as well as URLs for NNTP newsgroup(s).