From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Al Cooper <alcooperx@gmail.com>
Cc: linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
bcm-kernel-feedback-list@broadcom.com,
devicetree@vger.kernel.org, Krzysztof Kozlowski <krzk@kernel.org>,
linux-usb@vger.kernel.org,
Mathias Nyman <mathias.nyman@intel.com>,
Rob Herring <robh+dt@kernel.org>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: [PATCH v10 1/5] usb: xhci: Change the XHCI link order in the Makefile
Date: Wed, 13 May 2020 14:26:13 +0200 [thread overview]
Message-ID: <20200513122613.GA1023594@kroah.com> (raw)
In-Reply-To: <20200512150019.25903-2-alcooperx@gmail.com>
On Tue, May 12, 2020 at 11:00:15AM -0400, Al Cooper wrote:
> Some BRCMSTB USB chips have an XHCI, EHCI and OHCI controller
> on the same port where XHCI handles 3.0 devices, EHCI handles 2.0
> devices and OHCI handles <2.0 devices. Currently the Makefile
> has XHCI linking at the bottom which will result in the XHIC driver
> initalizing after the EHCI and OHCI drivers and any installed 3.0
> device will be seen as a 2.0 device. Moving the XHCI linking
> above the EHCI and OHCI linking fixes the issue.
What happens if all of these are modules and they are loaded in a
different order? This makefile change will not help with that, you need
to have logic in the code in order to properly coordinate this type of
mess, sorry.
thanks,
greg k-h
next prev parent reply other threads:[~2020-05-13 12:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-12 15:00 [PATCH v10 0/5] Add XHCI, EHCI and OHCI support for Broadcom STB SoS's Al Cooper
2020-05-12 15:00 ` [PATCH v10 1/5] usb: xhci: Change the XHCI link order in the Makefile Al Cooper
2020-05-13 12:26 ` Greg Kroah-Hartman [this message]
2020-05-13 15:08 ` Florian Fainelli
2020-05-13 15:26 ` Andy Shevchenko
2020-05-13 15:28 ` Florian Fainelli
2020-05-13 16:27 ` Greg Kroah-Hartman
2020-05-13 16:31 ` Florian Fainelli
2020-05-13 17:05 ` Greg Kroah-Hartman
2020-05-13 17:39 ` Alan Stern
2020-05-13 17:46 ` Florian Fainelli
2020-05-13 19:42 ` Alan Cooper
2020-05-20 17:29 ` Alan Cooper
2020-05-21 6:09 ` Greg Kroah-Hartman
2020-05-21 15:37 ` Florian Fainelli
2020-05-12 15:00 ` [PATCH v10 2/5] dt-bindings: Add Broadcom STB USB support Al Cooper
2020-05-12 15:00 ` [PATCH v10 3/5] usb: xhci: xhci-plat: Add support for Broadcom STB SoC's Al Cooper
2020-05-12 15:00 ` [PATCH v10 4/5] usb: ehci: Add new EHCI driver " Al Cooper
2020-05-12 15:00 ` [PATCH v10 5/5] usb: host: Add ability to build new Broadcom STB USB drivers Al Cooper
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