From: Greg KH <gregkh@linuxfoundation.org>
To: Adrian Zaharia <adrian.zaharia@windriver.com>
Cc: stable@vger.kernel.org, mathias.nyman@intel.com,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5.10 1/1] xhci: Set HCD flag to defer primary roothub registration
Date: Fri, 27 Jan 2023 08:25:16 +0100 [thread overview]
Message-ID: <Y9N8XEh6rL/MWP77@kroah.com> (raw)
In-Reply-To: <20230125133359.3538078-2-adrian.zaharia@windriver.com>
On Wed, Jan 25, 2023 at 03:33:59PM +0200, Adrian Zaharia wrote:
> From: Kishon Vijay Abraham I <kishon@ti.com>
>
> [ Upstream commit b7a4f9b5d0e4b6dd937678c546c0b322dd1a4054 ]
>
> Set "HCD_FLAG_DEFER_RH_REGISTER" to hcd->flags in xhci_run() to defer
> registering primary roothub in usb_add_hcd() if xhci has two roothubs.
> This will make sure both primary roothub and secondary roothub will be
> registered along with the second HCD.
> This is required for cold plugged USB devices to be detected in certain
> PCIe USB cards (like Inateck USB card connected to AM64 EVM or J7200 EVM).
>
> This patch has been added and reverted earier as it triggered a race
> in usb device enumeration.
> That race is now fixed in 5.16-rc3, and in stable back to 5.4
> commit 6cca13de26ee ("usb: hub: Fix locking issues with address0_mutex")
> commit 6ae6dc22d2d1 ("usb: hub: Fix usb enumeration issue due to address0
> race")
>
> [minor rebase change, and commit message update -Mathias]
>
> CC: stable@vger.kernel.org # 5.4+
> Suggested-by: Mathias Nyman <mathias.nyman@linux.intel.com>
> Tested-by: Chris Chiu <chris.chiu@canonical.com>
> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
> Link: https://lore.kernel.org/r/20220510091630.16564-3-kishon@ti.com
> Signed-off-by: Adrian Zaharia <Adrian.Zaharia@windriver.com>
> ---
> drivers/usb/host/xhci.c | 2 ++
> 1 file changed, 2 insertions(+)
You dropped my original signed-off-by? Odd...
Anyway, now queued up.
greg k-h
prev parent reply other threads:[~2023-01-27 7:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-25 13:33 [PATCH 5.10 0/1] backport of 'xhci: Set HCD flag to defer primary roothub registration' Adrian Zaharia
2023-01-25 13:33 ` [PATCH 5.10 1/1] xhci: Set HCD flag to defer primary roothub registration Adrian Zaharia
2023-01-27 7:25 ` Greg KH [this message]
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=Y9N8XEh6rL/MWP77@kroah.com \
--to=gregkh@linuxfoundation.org \
--cc=adrian.zaharia@windriver.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=mathias.nyman@intel.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;
as well as URLs for NNTP newsgroup(s).