From: Sergei Shtylyov <sshtylyov@mvista•com>
To: Shengzhou Liu <Shengzhou.Liu@freescale•com>
Cc: linux-usb@vger•kernel.org, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH v2] powerpc/usb: fix issue of CPU halt when missing USB PHY clock
Date: Thu, 02 Feb 2012 15:39:48 +0400 [thread overview]
Message-ID: <4F2A7604.9060102@mvista.com> (raw)
In-Reply-To: <1328152994-2879-1-git-send-email-Shengzhou.Liu@freescale.com>
Hello.
On 02-02-2012 7:23, Shengzhou Liu wrote:
> when missing USB PHY clock, kernel booting up will halt during USB
> initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
> CPU hang in this case.
> Signed-off-by: Shengzhou Liu<Shengzhou.Liu@freescale•com>
[...]
> diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
> index 4918062..dd3dc47 100644
> --- a/drivers/usb/host/ehci-fsl.h
> +++ b/drivers/usb/host/ehci-fsl.h
> @@ -45,5 +45,6 @@
> #define FSL_SOC_USB_PRICTRL 0x40c /* NOTE: big-endian */
> #define FSL_SOC_USB_SICTRL 0x410 /* NOTE: big-endian */
> #define FSL_SOC_USB_CTRL 0x500 /* NOTE: big-endian */
> +#define CTRL_PHY_CLK_VALID (1 << 17)
Indent the macro value with tabs please.
WBR, Sergei
next prev parent reply other threads:[~2012-02-02 11:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-02 3:23 [PATCH v2] powerpc/usb: fix issue of CPU halt when missing USB PHY clock Shengzhou Liu
2012-02-02 11:39 ` Sergei Shtylyov [this message]
2012-02-02 19:14 ` Greg KH
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