linux-kernel - Re: [PATCH] usb: gadget: fsl: check vbus presence on probe

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Date:	Wed, 30 Apr 2014 15:12:02 -0500
From:	Felipe Balbi <balbi@...com>
To:	Paul Fertser <fercerpav@...il.com>
CC:	Felipe Balbi <balbi@...com>, Li Yang <leoli@...escale.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<suresh.gupta@...escale.com>
Subject: Re: [PATCH] usb: gadget: fsl: check vbus presence on probe

+Suresh

(top-posting, yeah yeah :-)

On Wed, Apr 30, 2014 at 11:27:45PM +0400, Paul Fertser wrote:
> Hello,
> 
> Thank you for the review.
> 
> On Wed, Apr 30, 2014 at 11:06:25AM -0500, Felipe Balbi wrote:
> > On Thu, Apr 24, 2014 at 12:54:13PM +0400, Paul Fertser wrote:
> > > If VBUS is already present during the driver initialisation, the
> > 
> > s/initialisation/initialization
> 
> If I'm understanding [1] properly, both spelling variants are correct.
> 
> > > +	/* Now let it settle a bit and sense VBUS */
> > > +	msleep_interruptible(1);
> > > +	if (fsl_readl(&dr_regs->otgsc) & OTGSC_STS_B_SESSION_VALID)
> > > +		udc_controller->vbus_active = 1;
> > 
> > good fix, should this go to stable ?
> 
> I was reluctant to Cc stable because I'm not sure which versions need
> to be fixed, as I've seen an earlier version (3.0 something or a bit
> before that probably) working without this (no idea why); also I'm not
> sure about that msleep as it's deduced solely from experimenting with
> a particular i.MX model, I hoped someone from Freescale would comment
> on it. I've seen your review [2] on a related patch and my fix should
> have been obvious to Suresh (and trivial to test on different boards),
> yet he didn't implement it, that worries me a bit.
> 
> [1] https://en.wikipedia.org/wiki/American_and_British_English_spelling_differences#-ise.2C_-ize_.28-isation.2C_-ization.29
> [2] https://patchwork.kernel.org/patch/3822321/
> -- 
> Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software!
> mailto:fercerpav@...il.com

-- 
balbi

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