linux-kernel - Re: [PATCH] ARM: OMAP1: ams-delta: fix early boot crash when LED support is disabled

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Message-ID: <20190416071420.GA14538@amd>
Date:   Tue, 16 Apr 2019 09:14:20 +0200
From:   Pavel Machek <pavel@....cz>
To:     Aaro Koskinen <aaro.koskinen@....fi>
Cc:     Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org,
        Janusz Krzysztofik <jmkrzyszt@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: OMAP1: ams-delta: fix early boot crash when LED
 support is disabled

On Tue 2019-04-16 02:37:32, Aaro Koskinen wrote:
> When we boot with the LED support (CONFIG_NEW_LEDS) disabled,
> gpio_led_register_device() will return a NULL pointer and we try
> to dereference it. Fix by checking also for a NULL pointer.
> 
> Fixes: 19a2668a8ae3 ("ARM: OMAP1: ams-delta: Provide GPIO lookup table for LED device")
> Signed-off-by: Aaro Koskinen <aaro.koskinen@....fi>

Acked-by: Pavel Machek <pavel@....cz>

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