linux-kernel - Re: [PATCH] ahci: imx: fix building without hwmon or thermal

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Date:   Sun, 15 Jan 2017 18:52:31 -0500
From:   Tejun Heo <tj@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Fabien Lahoudere <fabien.lahoudere@...labora.co.uk>,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ahci: imx: fix building without hwmon or thermal

On Wed, Jan 11, 2017 at 02:36:16PM +0100, Arnd Bergmann wrote:
> When CONFIG_HWMON is disabled, we now get a link failure:
> 
> ERROR: "devm_hwmon_device_register_with_groups" [drivers/ata/ahci_imx.ko] undefined!
> drivers/ata/ahci_imx.o: In function `imx_ahci_probe':
> ahci_imx.c:(.text.imx_ahci_probe+0x304): undefined reference to `devm_thermal_zone_of_sensor_register'
> 
> This makes the code calling into the hwmon subsystem compile-time
> conditional, and adds a Kconfig dependency to avoid the corner
> case of having HWMON=m and AHCI_IMX=y, by forcing AHCI_IMX=m in this
> case. The thermal subsystem already has a check in its header, but
> that also doesn't cover the THERMAL=m case, so we need a somewhat
> complex Kconfig expression to handle all cases.
> 
> Fixes: 54643a83b41a ("ahci: imx: Add imx53 SATA temperature sensor support")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied to libata/for-4.11.

Thanks.

-- 
tejun