linux-kernel - Re: [PATCH] staging: rts5208: rtsx.c: Fix checkpatch warnings.

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Date:   Thu, 25 Aug 2016 22:20:55 +0530
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Ming-Chia Chung <quexint@...il.com>
Cc:     gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, Andy Whitcroft <apw@...onical.com>,
        Joe Perches <joe@...ches.com>
Subject: Re: [PATCH] staging: rts5208: rtsx.c: Fix checkpatch warnings.

On Thu, Aug 25, 2016 at 09:59:46PM +0800, Ming-Chia Chung wrote:
> On Tue, Aug 23, 2016 at 12:01:36PM +0530, Sudip Mukherjee wrote:
> > On Tue, Aug 23, 2016 at 08:19:46AM +0800, Ming-Chia Chung wrote:
> > > On Mon, Aug 22, 2016 at 10:51:27PM +0530, Sudip Mukherjee wrote:
> > > > On Tue, Aug 23, 2016 at 12:54:17AM +0800, MingChia Chung wrote:
> > > > >   This patch fixes a minor checkpatch warnings:
> > > > > 
> > > > >   "WARNING: Block comments use a trailing */ on a separate line"
> > > > > 
> > > > >   Signed-off-by: Ming-Chia Chung <Quexint@...il.com>
> > > > > ---
> > > > >  drivers/staging/rts5208/rtsx.c | 42 ++++++++++++++++++++++++++++--------------
> > > > >  1 file changed, 28 insertions(+), 14 deletions(-)
> > > > > 
> > > > > diff --git a/drivers/staging/rts5208/rtsx.c b/drivers/staging/rts5208/rtsx.c
> > > > > index e992e03..a880411 100644
> > > > > --- a/drivers/staging/rts5208/rtsx.c
> > > > > +++ b/drivers/staging/rts5208/rtsx.c
> > > > > @@ -81,14 +81,16 @@ static int slave_alloc(struct scsi_device *sdev)
> > > > >  
> > > > >  static int slave_configure(struct scsi_device *sdev)
> > > > >  {
> > > > > -	/* Scatter-gather buffers (all but the last) must have a length
> > > > > +	/*
> > > > > +   * Scatter-gather buffers (all but the last) must have a length
> > > > 
> > > > The alignment doesnot look correct here. Also in some more places later
> > > > in this patch.
> > > > 
> > > > regards
> > > > Sudip
> > > 
> > > I sent this patch by following docs ([1] and [2]). The style for long
> > > comments needs the begining and ending almost-blank lines. There is no
> > > the begining almost-blank line only for the files in net/ and
> > > drivers/net/.
> > > Please let me know what I misunderstood.
> > 
> > After applying the patch the file was like:
> >         /*
> >    * Scatter-gather buffers (all but the last) must have a length
> >          * divisible by the bulk maxpacket size.  Otherwise a data packet
> >          * would end up being short, causing a premature end to the data
> >          * transfer.  Since high-speed bulk pipes have a maxpacket size
> > 
> > See the alignment of the second line. Please use tab instead of space. And also
> > checkpatch should have warned you not to use space before the Signed-off-by.
> > 
> 
> Thank you for detailed explanation. I enabled "expandtab" in vim so that
> I didn't realize the alignment is wrong. Now, I install 'linuxsty.vim'
> to view the code. But checkpatch.pl didn't show the warning of space.
> Here is my command:
> `kernels/staging$ perl scripts/checkpatch.pl -f drivers/staging/rts5208/rtsx.c`

Please run checkpatch on your patch and it will show you the warning
about space before Signed-off-by. But it missed the place where space
was used inplace of tab. Maybe you can send a patch to fix checkpatch.

Added Cc: to Joe and Andy.

regards
sudip