linux-kernel - Re: [PATCH] usb: phy: twl4030-usb: Fix lost interrupts after ID pin goes down

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Date:	Thu, 21 Aug 2014 12:08:19 -0500
From:	Felipe Balbi <balbi@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	Kishon Vijay Abraham I <kishon@...com>,
	Grazvydas Ignotas <notasas@...il.com>,
	Felipe Balbi <balbi@...com>, <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>
Subject: Re: [PATCH] usb: phy: twl4030-usb: Fix lost interrupts after ID pin
 goes down

On Thu, Aug 21, 2014 at 09:48:04AM -0700, Tony Lindgren wrote:
> Commit 249751f22380 ("usb: phy: twl4030-usb: poll for ID disconnect")
> added twl4030_id_workaround_work() to deal with lost interrupts
> after ID pin goes down. However, this currently only works for the
> insertion. The PHY interrupts are not working after disconnecting
> an USB-A device from the board, and the deeper idle states for
> omap are blocked as the USB controller stays busy.
> 
> The issue can be solved by calling delayed work from twl4030_usb_irq()
> when ID pin is down and the PHY is not asleep like we already do
> in twl4030_id_workaround_work().
> 
> But as both twl4030_usb_irq() and twl4030_id_workaround_work()
> already do pretty much the same thing, let's call twl4030_usb_irq()
> from twl4030_id_workaround_work() instead of adding some more
> duplicate code.
> 
> Fixes: 249751f22380 ("usb: phy: twl4030-usb: poll for ID disconnect")
> Cc: stable@...r.kernel.org # v3.12+
> Signed-off-by: Tony Lindgren <tony@...mide.com>

looks ok to me:

Acked-by: Felipe Balbi <balbi@...com>

-- 
balbi

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