linux-kernel - Re: [PATCH] media: atomisp: silence "dubious: !x

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Message-ID: <20210418012648.GA4821@ashish-NUC8i5BEH>
Date:   Sun, 18 Apr 2021 06:56:48 +0530
From:   Ashish Kalra <eashishkalra@...il.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Ashish Kalra <eashishkalra@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: atomisp: silence "dubious: !x | !y" warning

On Sat, Apr 17, 2021 at 08:56:13PM +0200, Mauro Carvalho Chehab wrote:
> Em Sat, 17 Apr 2021 21:06:27 +0530
> Ashish Kalra <eashishkalra@...il.com> escreveu:
> 
> > Upon running sparse, "warning: dubious: !x | !y" is brought to notice
> > for this file.  Logical and bitwise OR are basically the same in this
> > context so it doesn't cause a runtime bug.  But let's change it to
> > logical OR to make it cleaner and silence the Sparse warning.
> > 
> > Signed-off-by: Ashish Kalra <eashishkalra@...il.com>
> > ---
> >  .../media/atomisp/pci/isp/kernels/vf/vf_1.0/ia_css_vf.host.c    | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/vf/vf_1.0/ia_css_vf.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/vf/vf_1.0/ia_css_vf.host.c
> > index 358cb7d2cd4c..3b850bb2d39d 100644
> > --- a/drivers/staging/media/atomisp/pci/isp/kernels/vf/vf_1.0/ia_css_vf.host.c
> > +++ b/drivers/staging/media/atomisp/pci/isp/kernels/vf/vf_1.0/ia_css_vf.host.c
> > @@ -58,7 +58,7 @@ sh_css_vf_downscale_log2(
> >  	unsigned int ds_log2 = 0;
> >  	unsigned int out_width;
> >  
> > -	if ((!out_info) | (!vf_info))
> > +	if ((!out_info) || (!vf_info))
> 
> 
> While here, please get rid of the unneeded parenthesis:
> 
> 	if (!out_info || !vf_info)
> 
> 
> >  		return -EINVAL;
> >  
> >  	out_width = out_info->res.width;
> 
> 
> 
> Thanks,
> Mauro
Updated Patch as per your feedback

Thanks
Ashish

View attachment "0001-media-atomisp-silence-dubious-x-y-warning.patch" of type "text/x-diff" (1259 bytes)