[0/2] Provide a hook to check port init status

Message ID	20220816083854.1491886-1-raychi@google.com (mailing list archive)
Headers	show Return-Path: <linux-usb-owner@kernel.org> Date: Tue, 16 Aug 2022 16:38:52 +0800 Message-Id: <20220816083854.1491886-1-raychi@google.com> Mime-Version: 1.0 Subject: [PATCH 0/2] Provide a hook to check port init status From: Ray Chi <raychi@google.com> To: gregkh@linuxfoundation.org, mathias.nyman@intel.com, stern@rowland.harvard.edu Cc: badhri@google.com, albertccwang@google.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Ray Chi <raychi@google.com> Content-Type: text/plain; charset="UTF-8" Precedence: bulk
Series	Provide a hook to check port init status \| expand [0/2] Provide a hook to check port init status [1/2] usb: core: add a hook to check port init status [2/2] usb: xhci: add check_init_status hook support

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20220816083854.1491886-1-raychi@google.com (mailing list archive)

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Date: Tue, 16 Aug 2022 16:38:52 +0800
Message-Id: <20220816083854.1491886-1-raychi@google.com>
Mime-Version: 1.0
Subject: [PATCH 0/2] Provide a hook to check port init status
From: Ray Chi <raychi@google.com>
To: gregkh@linuxfoundation.org, mathias.nyman@intel.com,
        stern@rowland.harvard.edu
Cc: badhri@google.com, albertccwang@google.com,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Ray Chi <raychi@google.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

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Provide a hook to check port init status | expand

Message

Ray Chi Aug. 16, 2022, 8:38 a.m. UTC

Currently, only usbcore knows port init status even if the result
is bad, so it will keep doing USB enumeration and other drivers can't
do anything. Add the hook to let other drivers know the status and do
error handling.

Ray Chi (2):
  usb: core: add a hook to check port init status
  usb: xhci: add check_init_status hook support

 drivers/usb/core/hub.c  | 14 ++++++++++++++
 drivers/usb/host/xhci.c | 17 +++++++++++++++++
 drivers/usb/host/xhci.h |  1 +
 include/linux/usb/hcd.h |  8 ++++++++
 4 files changed, 40 insertions(+)