linux-kernel - Re: linux-next: build failure after merge of the omap

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Date:	Tue, 25 Nov 2014 12:20:43 +0100
From:	Hans de Goede <hdegoede@...hat.com>
To:	Tomi Valkeinen <tomi.valkeinen@...com>
CC:	David Herrmann <dh.herrmann@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Luc Verhaegen <libv@...net.be>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Grant Likely <grant.likely@...aro.org>
Subject: Re: linux-next: build failure after merge of the omap_dss2 tree

Hi Tomi,

On 11/25/2014 12:00 PM, Tomi Valkeinen wrote:
> On 18/11/14 17:07, David Herrmann wrote:
>> Hi
>>
>> On Tue, Nov 18, 2014 at 3:53 PM, Tomi Valkeinen <tomi.valkeinen@...com> wrote:
>>> Hi,
>>>
>>> Thanks Stephen!
>>>
>>> Hans, have you had a look at this? kbuild test bot also reported this.
>>
>> The fix from Stephen should not go to main-line. It breaks simplefb on
>> x86 without OF. Imo, linux/clk.h should provide a fallback if OF is
>> not defined (like it already does for of_clk_get() and friends).
>>
>> Hans, any comments?
>
> Hans, ping.

Sorry I somehow missed this thread so far, I did see the kbuild mail, but
it looked like a false positive to me, for the compile error case I already fixed
in the last revision of the patch, adding #ifdef CONFIG_OF around the offending code.

But on closer inspection I see that the entirety of linux/clk-provider.h is wrapped
in one huge #ifdef CONFIG_COMMON_CLK and then later on also has:

#ifdef CONFIG_OF
...
int of_clk_get_parent_count(struct device_node *np);
...
#endif

So we need both CONFIG_OF and CONFIG_COMMON_CLK, the attached patch
should fix this.

Regards,

Hans

View attachment "0001-simplefb-Fix-build-errors-when-CONFIG_COMMON_CLK-is-.patch" of type "text/x-patch" (1028 bytes)