netdev - Re: [PATCH net-next] cxgb4: fix thermal configuration dependencies

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Date:   Thu, 11 Oct 2018 10:21:30 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     arnd@...db.de
Cc:     ganeshgr@...lsio.com, rahul.lakkireddy@...lsio.com,
        kumaras@...lsio.com, rajur@...lsio.com, leedom@...lsio.com,
        arjun@...lsio.com, atul.gupta@...lsio.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] cxgb4: fix thermal configuration dependencies

From: Arnd Bergmann <arnd@...db.de>
Date: Thu, 11 Oct 2018 10:57:57 +0200

> With CONFIG_THERMAL=m, we get a build error:
> 
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c: In function 'cxgb4_thermal_get_trip_type':
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c:48:11: error: 'struct adapter' has no member named 'ch_thermal'
> 
> Once that is fixed by using IS_ENABLED() checks, we get a link error
> against the thermal subsystem when cxgb4 is built-in:
> 
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.o: In function `cxgb4_thermal_init':
> cxgb4_thermal.c:(.text+0x180): undefined reference to `thermal_zone_device_register'
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.o: In function `cxgb4_thermal_remove':
> cxgb4_thermal.c:(.text+0x1e0): undefined reference to `thermal_zone_device_unregister'
> 
> Finally, since CONFIG_THERMAL can be =m, the Makefile fails to pick up the
> extra file into built-in.a, and we get another link failure against the
> cxgb4_thermal_init/cxgb4_thermal_remove files, so the Makefile has to
> be adapted as well to work for both CONFIG_THERMAL=y and =m.
> 
> Fixes: b18719157762 ("cxgb4: Add thermal zone support")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied, thanks Arnd.