linux-kernel - Re: [PATCH] arm: omap: usb: clock enable typo fix in usbhs driver

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Message-ID: <CAP05o4+RKcYPFez0xJYimugPEpPJcFoPJawW+c0hdty7YmNLAg@mail.gmail.com>
Date:	Fri, 22 Jul 2011 17:57:26 +0530
From:	"Munegowda, Keshava" <keshava_mgowda@...com>
To:	balbi@...com
Cc:	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, gadiyar@...com,
	sameo@...ux.intel.com, parthab@...ia.ti.com, kishon@...com
Subject: Re: [PATCH] arm: omap: usb: clock enable typo fix in usbhs driver

On Fri, Jul 22, 2011 at 5:52 PM, Felipe Balbi <balbi@...com> wrote:
> Hi,
>
> On Tue, Jul 19, 2011 at 07:41:43PM +0530, Keshava Munegowda wrote:
>> From: Keshava Munegowda <Keshava_mgowda@...com>
>
> $SUBJECT is quite weird. First, this is not a patch on arch/arm/*omap*/
> so arm: omap: is already wrong. Also, "enable typo fix" is quite werid.
>
> Something like: "mfd: omap-usb-host: fix clock API usage on
> usbhs_disable()" would read better.
>
>> The usbhs_disable function was invoking clk_enable api
>> instead of clk_disable; The clk_disable is called to
>                        ^ this semicolon should be a period.
>
> ok, you're missing the actual problem here. How about you extend it to
> read as:
>
> usbhs_disable function was invoking clk_enable() instead of
> clk_disable(), thus only increasing the clock usage counter and
> preventing this particular clock from being ever turned off.
>
> Because of that, the power domain where the USB Host subsystem is
> located, would never reach lower power states.
>
>> disble the port clocks of usbhs
>    ^^ disable.
>
> --
> balbi

Thanks I will send the updated patch soon.

>
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