Re: [PATCH] media: include/video/omapfb_dss.h: use IS_ENABLED()

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On 05/05/2018 02:14 PM, Mauro Carvalho Chehab wrote:
> Em Sat, 5 May 2018 10:59:23 -0700
> Randy Dunlap <rdunlap@xxxxxxxxxxxxx> escreveu:
> 
>> On 05/04/2018 01:49 PM, Mauro Carvalho Chehab wrote:
>>> Just checking for ifdefs cause build issues as reported by
>>> kernel test:
>>>
>>> config: openrisc-allmodconfig (attached as .config)
>>> compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)
>>>
>>> All errors (new ones prefixed by >>):
>>>
>>>    drivers/video/fbdev/omap2/omapfb/omapfb-main.c: In function 'omapfb_init_connections':  
>>>>> drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2396:8: error: implicit declaration of function 'omapdss_find_mgr_from_display' [-Werror=implicit-function-declaration]  
>>>      mgr = omapdss_find_mgr_from_display(def_dssdev);
>>>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>    drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2396:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>>>      mgr = omapdss_find_mgr_from_display(def_dssdev);
>>>          ^
>>>    drivers/video/fbdev/omap2/omapfb/omapfb-main.c: In function 'omapfb_find_default_display':  
>>>>> drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2430:13: error: implicit declaration of function 'omapdss_get_default_display_name' [-Werror=implicit-function-declaration]  
>>>      def_name = omapdss_get_default_display_name();
>>>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>    drivers/video/fbdev/omap2/omapfb/omapfb-main.c:2430:11: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>>>      def_name = omapdss_get_default_display_name();
>>>               ^
>>>
>>> So, use IS_ENABLED() instead.  
>>
>> Hi,
>>
>> I would like to test this (the change doesn't make much sense to me),
>> but I cannot find the kernel config file nor the kernel test robot's
>> email of this report.
>>
>> Please include an lkml.kernel.org/r/<message_id> reference to such emails
>> so that interested parties can join the party.
> 
> The message was not c/c to lkml. You can see the original here:
> 
> https://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg130809.html
> 
> 
>>
>> Does this patch apply only to your media tree?  so hopefully I can see it in
>> linux-next on Monday.
> 
> Yes, as it is over another two patches applied there.
> 
> If you want to test it earlier, it is in the top of the master branch:
> 	https://git.linuxtv.org/media_tree.git
> 
>>
>> Thanks.
>>
>>> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
>>> Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>>> Cc: tomi.valkeinen@xxxxxx
>>> Cc: linux-omap@xxxxxxxxxxxxxxx
>>> Cc: linux-fbdev@xxxxxxxxxxxxxxx
>>> Fixes: 771f7be87ff9 ("media: omapfb: omapfb_dss.h: add stubs to build with COMPILE_TEST && DRM_OMAP")
>>> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
>>> ---
>>>  include/video/omapfb_dss.h | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/include/video/omapfb_dss.h b/include/video/omapfb_dss.h
>>> index e9775144ff3b..12755d8d9b4f 100644
>>> --- a/include/video/omapfb_dss.h
>>> +++ b/include/video/omapfb_dss.h
>>> @@ -778,7 +778,7 @@ struct omap_dss_driver {
>>>  
>>>  typedef void (*omap_dispc_isr_t) (void *arg, u32 mask);
>>>  
>>> -#ifdef CONFIG_FB_OMAP2
>>> +#if IS_ENABLED(CONFIG_FB_OMAP2)
>>>  
>>>  enum omapdss_version omapdss_get_version(void);
>>>  bool omapdss_is_initialized(void);

The patch doesn't make any sense to me.  I would like to see an
explanation of why this is needed, other than "it fixes the build." ;)

But it does fix the build, so:
Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>


thanks,
-- 
~Randy
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