linux-kernel - Re: [PATCH v10] staging: fbtft: add tearing signal detect

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Message-ID: <20210128091259.00003202@gmail.com>
Date:   Thu, 28 Jan 2021 09:12:59 +0800
From:   carlis <zhangxuezhi3@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        devel@...verdev.osuosl.org, linux-fbdev@...r.kernel.org,
        mh12gx2825@...il.com, sbrivio@...hat.com,
        oliver.graute@...oconnector.com, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, Joe Perches <joe@...ches.com>,
        Andy Whitcroft <apw@...onical.com>, colin.king@...onical.com,
        zhangxuezhi1@...ong.com
Subject: Re: [PATCH v10] staging: fbtft: add tearing signal detect

On Wed, 27 Jan 2021 16:02:35 +0100
Greg KH <gregkh@...uxfoundation.org> wrote:

> On Wed, Jan 27, 2021 at 05:49:46PM +0300, Dan Carpenter wrote:
> > On Wed, Jan 27, 2021 at 03:25:20PM +0100, Greg KH wrote:  
> > > On Wed, Jan 27, 2021 at 10:17:08PM +0800, carlis wrote:  
> > > > On Wed, 27 Jan 2021 15:13:05 +0100
> > > > Greg KH <gregkh@...uxfoundation.org> wrote:
> > > >   
> > > > > On Wed, Jan 27, 2021 at 10:08:09PM +0800, carlis wrote:  
> > > > > > On Wed, 27 Jan 2021 14:51:55 +0100
> > > > > > Greg KH <gregkh@...uxfoundation.org> wrote:
> > > > > >     
> > > > > > > On Wed, Jan 27, 2021 at 09:42:52PM +0800, Carlis wrote:
> > > > > > >  
> > > > > > > > From: zhangxuezhi <zhangxuezhi1@...ong.com>
> > > > > > > > 
> > > > > > > > For st7789v ic,when we need continuous full screen
> > > > > > > > refresh, it is best to wait for the TE signal arrive to
> > > > > > > > avoid screen tearing
> > > > > > > > 
> > > > > > > > Signed-off-by: zhangxuezhi <zhangxuezhi1@...ong.com>
> > > > > > > >   
> > > > > > > 
> > > > > > > Please slow down and wait at least a day between patch
> > > > > > > submissions, there is no rush here.
> > > > > > > 
> > > > > > > And also, ALWAYS run scripts/checkpatch.pl on your
> > > > > > > submissions, so that you don't have a maintainer asking
> > > > > > > you about basic problems, like are in this current patch
> > > > > > > :(
> > > > > > > 
> > > > > > > thanks,
> > > > > > > 
> > > > > > > greg k-h    
> > > > > > 
> > > > > > hi,
> > > > > >   This is my first patch contribution to Linux, so some of
> > > > > > the rules are not very clear .In addition, I can confirm
> > > > > > that before sending patch, I check it with checkPatch.py
> > > > > > every time.Thank you very much for your help    
> > > > > 
> > > > > Please read Documentation/SubmittingPatches which has a link
> > > > > to the checklist and other documentation you should read.
> > > > > 
> > > > > And I doubt you are running checkpatch on your submission, as
> > > > > there is obvious coding style issues in it.  If so, please
> > > > > provide the output as it must be broken :(
> > > > > 
> > > > > thanks,
> > > > > 
> > > > > greg k-h  
> > > > hi, the patch v11 checkpatch.pl output is below:
> > > > 
> > > > carlis@...rmsz-10:~/work/linux-kernel/linux$
> > > > ./scripts/checkpatch.pl
> > > > 0001-staging-fbtft-add-tearing-signal-detect.patch total: 0
> > > > errors, 0 warnings, 0 checks, 176 lines checked
> > > > 
> > > > 0001-staging-fbtft-add-tearing-signal-detect.patch has no
> > > > obvious style problems and is ready for submission.  
> > > 
> > > Wow, my apologies!
> > > 
> > > Andy and Joe, there's something wrong here that is missing the
> > > fact that a line is being indented with spaces and not tabs in
> > > the patch at
> > > https://lore.kernel.org/r/1611754972-151016-1-git-send-email-zhangxuezhi3@gmail.com
> > > 
> > > Any ideas what broke?
> > >   
> > 
> >     /*Tearing Effect Line On*/
> > 
> > Comments are the exception to the "no spaces at the start of a line"
> > rule.  I was expecting that the kbuild-bot would send a Smatch
> > warning for inconsistent indenting, but comments are not counted
> > there either.
> > 
> > I'm sort of surprised that we don't have checkpatch rule about the
> > missing space characters.  It should be: "/* Tearing Effect Line On
> > */".  
> 
> That was going to be my next question, lots of comments added in this
> patch don't have spaces...
> 
> thanks,
> 
> greg k-h

Ok,i will fix it in patch v12 tomorrow

regards,
zhangxuezhi