linux-kernel - Re: [PATCH STABLE v4.19.15] gpiolib: fix line event timestamps for nested irqs

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Date:   Wed, 16 Jan 2019 17:02:16 +0100
From:   Greg KH <greg@...ah.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Sasha Levin <sashal@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH STABLE v4.19.15] gpiolib: fix line event timestamps for
 nested irqs

On Wed, Jan 16, 2019 at 04:35:57PM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> Nested interrupts run inside the calling thread's context and the top
> half handler is never called which means that we never read the
> timestamp.
> 
> This issue came up when trying to read line events from a gpiochip
> using regmap_irq_chip for interrupts.
> 
> Fix it by reading the timestamp from the irq thread function if it's
> still 0 by the time the second handler is called.
> 
> Fixes: d58f2bf261fd ("gpio: Timestamp events in hardirq handler")
> Cc: stable@...r.kernel.org
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
> Hi Sasha,
> 
> this is a backport for v4.19.y series. The original patch didn't apply
> due to a conflict.

What is the git commit id for this patch in Linus's tree?

thanks,

greg k-h