linux-kernel - Re: [PATCH 1/3] gpio: dln2: fix issue when an IRQ is unmasked then enabled

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Message-ID: <CACRpkdYM_Bg_jH_sDuSsdJ1LWKYyj2LURAKRZ8FYODG5Soqa6Q@mail.gmail.com>
Date:	Wed, 31 Dec 2014 21:55:08 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Octavian Purdila <octavian.purdila@...el.com>
Cc:	Lee Jones <lee.jones@...aro.org>, Johan Hovold <johan@...nel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 1/3] gpio: dln2: fix issue when an IRQ is unmasked then enabled

On Thu, Dec 11, 2014 at 2:02 PM, Octavian Purdila
<octavian.purdila@...el.com> wrote:

> As noticed during suspend/resume operations, the IRQ can be unmasked
> then disabled in suspend and eventually enabled in resume, but without
> being unmasked.
>
> The current implementation does not take into account interactions
> between mask/unmask and enable/disable interrupts, and thus in the
> above scenarios the IRQs remain unactive.
>
> To fix this we removed the enable/disable operations as they fallback
> to mask/unmask anyway.
>
> We also remove the pending bitmaks as it is already done in irq_data
> (i.e. IRQS_PENDING).
>
> Signed-off-by: Octavian Purdila <octavian.purdila@...el.com>

Patch applied for fixes.

Yours,
Linus Walleij
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