Re: [PATCH v2 1/3] media: atomisp: convert default struct values to use compound-literals with designated initializers.

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On 2017-12-02, at 20:41:48 +0000, Jeremy Sowden wrote:
> On 2017-12-02, at 10:35:06 +0000, Jeremy Sowden wrote:
> > On 2017-12-02, at 13:20:09 +0300, Dan Carpenter wrote:
> > > On Fri, Dec 01, 2017 at 05:19:37PM +0000, Jeremy Sowden wrote:
> > > > -#define DEFAULT_PIPE_INFO \
> > > > -{ \
> > > > -	{IA_CSS_BINARY_DEFAULT_FRAME_INFO},	/* output_info */ \
> > > > -	{IA_CSS_BINARY_DEFAULT_FRAME_INFO},	/* vf_output_info */ \
> > > > -	IA_CSS_BINARY_DEFAULT_FRAME_INFO,	/* raw_output_info */ \
> > > > -	{ 0, 0},				/* output system in res */ \
> > > > -	DEFAULT_SHADING_INFO,			/* shading_info */ \
> > > > -	DEFAULT_GRID_INFO,			/* grid_info */ \
> > > > -	0					/* num_invalid_frames */ \
> > > > -}
> > > > +#define DEFAULT_PIPE_INFO ( \
> > >
> > > Why does this have a ( now?  That can't compile can it??
> > >
> > > > +	(struct ia_css_pipe_info) { \
> > > > +		.output_info			= {IA_CSS_BINARY_DEFAULT_FRAME_INFO}, \
> > > > +		.vf_output_info			= {IA_CSS_BINARY_DEFAULT_FRAME_INFO}, \
> > > > +		.raw_output_info		= IA_CSS_BINARY_DEFAULT_FRAME_INFO, \
> > > > +		.output_system_in_res_info	= { 0, 0 }, \
> > > > +		.shading_info			= DEFAULT_SHADING_INFO, \
> > > > +		.grid_info			= DEFAULT_GRID_INFO, \
> > > > +		.num_invalid_frames		= 0 \
> > > > +	} \
> > > > +)
> >
> > Checkpatch got quite shouty, e.g.:
> >
> >   ERROR: Macros with complex values should be enclosed in parentheses
> >   #826: FILE: drivers/staging/media/atomisp/pci/atomisp2/css2400/isp/kernels/sdis/common/ia_css_sdis_common_types.h:215:
> >   +#define DEFAULT_DVS_STAT_PUBLIC_DVS_GLOBAL_CFG \
> >   +(struct dvs_stat_public_dvs_global_cfg) { \
> >   +       .kappa          = 0, \
> >   +       .match_shift    = 0, \
> >   +       .ybin_mode      = 0, \
> >   +}
> >
> > so I just wrapped all of them.
>
> I've run checkpatch.pl against the unparenthesized patches, and it
> only objects to some of the macros.  I've also taken a look at the
> source of checkpatch.pl itself, and at first glance it appears that it
> should accept them.  I'll see if I can work out why it's complaining.

I think I've found a bug in checkpatch.pl.  I'll remove the parentheses
from my patches 'cause the error-reportd appear to be bogus, and pass on
my findings.

J.

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