From: Sandeep Maheswaram <sanm@codeaurora.org>
To: Felipe Balbi <balbi@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Mathias Nyman <mathias.nyman@intel.com>,
linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org,
Pratham Pratap <prathampratap@codeaurora.org>,
Jack Pham <jackp@codeaurora.org>,
Stephen Boyd <swboyd@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
Doug Anderson <dianders@chromium.org>
Subject: Re: Regarding usb dwc3 core shutdown callback
Date: Thu, 26 Aug 2021 15:11:18 +0530 [thread overview]
Message-ID: <eb975a76-1482-f502-4dc1-7993cc3f30d0@codeaurora.org> (raw)
In-Reply-To: <87bl63yqq8.fsf@kernel.org>
Hi,
On 8/12/2021 2:37 PM, Felipe Balbi wrote:
> Hi,
>
> (why isn't this email plain/text? Content Type was set to multipart
> alternative, please configure your email client correctly :-)
>
> While at that, also make sure to break lines at 80-columns)
>
> Sandeep Maheswaram <sanm@codeaurora.org> writes:
>> Hi,
>>
>> Earlier I have posted the patch for usb dwc3 core shutdown callback
>>
>> https://lore.kernel.org/linux-arm-msm/1618380209-20114-1-git-send-email-sanm@codeaurora.org/
>>
>> and it was reverted due to issues.
> Right, as should be expected when we find regressions
>
>> https://lore.kernel.org/linux-usb/20210603151742.298243-1-alexandru.elisei@arm.com/
>>
>> As we already have shutdown callback in xhci plat driver where we halt
>> the controller, so there will be no transactions with usb devices.
>>
>> https://lore.kernel.org/linux-usb/20200306092328.41253-1-ran.wang_1@nxp.com/
>>
>> So I think dwc3 core shutdown may not be required at least when we are
>> using host mode. Let me know your opinion about this.
> If that's the case, then sure. Please validate the condition, though,
> and kindly report back on your findings
I have enabled couple of logs in shutdown path and see no URBs enqueued
after xhci shut down.
Hope this is enough for validation . Please suggest if anything more I
could do.
[ 312.862737] systemd-journald[650]: Received SIGTERM from PID 1 (init).
[ 312.866332] xhci-hcd xhci-hcd.0.auto: xhci_urb_enqueue
[ 312.875205] xhci-hcd xhci-hcd.0.auto: xhci_urb_enqueue
[ 312.951045] Unsafe core_pattern used with fs.suid_dumpable=2.
[ 312.951045] Pipe handler or fully qualified core dump path required.
[ 312.951045] Set kernel.core_pattern before fs.suid_dumpable.
[ 312.981364] ip_local_port_range: prefer different parity for
start/end values.
[ 313.086729] Bluetooth: qca_download_firmware() hci0: QCA Downloading
qca/crnv32.bin
[ 313.194059] init: console-ttyMSM0 main process (516) killed by TERM
signal
[ 313.317109] kvm: exiting hardware virtualization
[ 313.338988] platform video-firmware.0: Removing from iommu group 14
[ 313.345975] platform wifi-firmware.0: Removing from iommu group 12
[ 313.372244] xhci-hcd xhci-hcd.0.auto: -->xhci_shutdown
[ 313.377591] xhci-hcd xhci-hcd.0.auto: // Halt the HC
[ 313.382811] xhci-hcd xhci-hcd.0.auto: xhci_shutdown completed -
status = 1
[ 313.398238] Bluetooth: qca_uart_setup() hci0: QCA setup on UART is
completed
[ 313.405583] debugfs: Directory 'ibs' with parent 'hci0' already present!
[ 313.439006] Bluetooth: qca_hw_error() hci0: mem_dump_status: 0
[ 313.445073] Bluetooth: qca_send_crashbuffer() hci0: crash the soc to
collect controller dump
[ 313.595791] arm-smmu 15000000.iommu: disabling translation
[ 313.601831] arm-smmu 5040000.iommu: disabling translation
[ 313.608559] reboot: Restarting system
Regards
Sandeep
next prev parent reply other threads:[~2021-08-26 9:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <e34c8e16-6521-c6e4-f3ed-9d8520d4ece2@codeaurora.org>
2021-08-12 9:07 ` Regarding usb dwc3 core shutdown callback Felipe Balbi
2021-08-26 9:41 ` Sandeep Maheswaram [this message]
2021-08-26 10:43 ` Felipe Balbi
2021-08-30 4:18 ` Sandeep Maheswaram
2021-08-30 4:45 ` Felipe Balbi
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=eb975a76-1482-f502-4dc1-7993cc3f30d0@codeaurora.org \
--to=sanm@codeaurora.org \
--cc=balbi@kernel.org \
--cc=dianders@chromium.org \
--cc=gregkh@linuxfoundation.org \
--cc=jackp@codeaurora.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=mathias.nyman@intel.com \
--cc=mka@chromium.org \
--cc=prathampratap@codeaurora.org \
--cc=swboyd@chromium.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;
as well as URLs for NNTP newsgroup(s).