linux-kernel - Re: [PATCH] usb: pci-quirks: do not access OHCI

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Message-ID: <5384BFC8.9060800@cogentembedded.com>
Date:	Tue, 27 May 2014 20:39:36 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Nikita Yushchenko <nyushchenko@....rtsoft.ru>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	lugovskoy@....rtsoft.ru
Subject: Re: [PATCH] usb: pci-quirks: do not access OHCI_FMINTERVAL register
 on ULI hw

Hello.

On 05/27/2014 08:56 AM, Nikita Yushchenko wrote:

> This access causes hang on Freescale P2020DS board (that has OHCI
> provided by ULI 1533 chip).

> Since preserving OHCI_FMINTERVAL was originally done only for NVIDIA
> hardware and only later (in c6187597) was turned unconditional, and
> c6187597 commit message again mentions only NVIDIA, I think it should be

    Please also specify that commit's summary line in parens.

> safe to disable preserving OHCI_FMINTERVAL if device vendor is ULI.

> Signed-off-by: Nikita Yushchenko <nyushchenko@....rtsoft.ru>
> ---
>   drivers/usb/host/pci-quirks.c |    8 +++++---
>   1 file changed, 5 insertions(+), 3 deletions(-)

WBR, Sergei

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