linux-kernel - Re: [PATCH 1/1] usb: ehci-fsl: set INCR8 mode only on MPC512x

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 24 Apr 2013 11:13:10 +0800
From:	"tiejun.chen" <tiejun.chen@...driver.com>
To:	<galak@...nel.crashing.org>
CC:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] usb: ehci-fsl: set INCR8 mode only on MPC512x

Sorry, please ignore this temporarily since looks this is already covered in tree.

I will look further into this to send another version.

Tiejun

On 04/24/2013 10:55 AM, Tiejun Chen wrote:
> commit 761bbcb7, "usb: ehci-fsl: set INCR8 mode for system bus interface
> on MPC512x", introduced to fix one MPC5121e (M36P) Errata by setting
> INCR8 mode for system bus interface on MPC512x, but we should make sure
> this is only valid for MPC512x like other parts of this commit. Otherwise
> this would issue other platforms as abnormal without this similar Errata.
>
> Signed-off-by: Tiejun Chen <tiejun.chen@...driver.com>
> ---
>   drivers/usb/host/ehci-fsl.c |   10 +++++++++-
>   1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
> index d81d2fc..f4f2a7b 100644
> --- a/drivers/usb/host/ehci-fsl.c
> +++ b/drivers/usb/host/ehci-fsl.c
> @@ -509,7 +509,15 @@ static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
>   	ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
>   		    hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
>
> -	ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
> +	if (of_device_is_compatible(dev->parent->of_node,
> +				    "fsl,mpc5121-usb2-dr")) {
> +		/*
> +		 * set SBUSCFG:AHBBRST so that control msgs don't
> +		 * fail when doing heavy PATA writes.
> +		 */
> +		ehci_writel(ehci, SBUSCFG_INCR8,
> +			    hcd->regs + FSL_SOC_USB_SBUSCFG);
> +	}
>
>   	/* restore EHCI registers */
>   	ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/