linux-kernel - Re: [PATCH 3/3] phy: mapphone-mdm6600: add gpiolib dependency

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Date:   Tue, 5 Mar 2019 07:46:46 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Rob Herring <robh@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] phy: mapphone-mdm6600: add gpiolib dependency

* Arnd Bergmann <arnd@...db.de> [190304 20:24]:
> gcc points out that when CONFIG_GPIOLIB is disabled,
> gpiod_get_array_value_cansleep() returns 0 but fails to set its output:
> 
> drivers/phy/motorola/phy-mapphone-mdm6600.c: In function 'phy_mdm6600_status':
> drivers/phy/motorola/phy-mapphone-mdm6600.c:220:24: error: 'values[0]' is used uninitialized in this function [-Werror=uninitialized]
> 
> This could be fixed more generally in gpiolib by returning a failure
> code, but for this specific case, the easier workaround is to add a
> gpiolib dependency.

Thanks for fixing it:

Acked-by: Tony Lindgren <tony@...mide.com>