linux-kernel - Re: [PATCH 1/2] [drivers] staging/lustre: fix sparse warnings

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Message-ID: <20141125073542.GN429@riot.fritz.box>
Date:	Tue, 25 Nov 2014 08:35:42 +0100
From:	Zahari Doychev <zahari.doychev@...ux.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	oleg.drokin@...el.com, bergwolf@...il.com,
	andreas.dilger@...el.com, gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/2] [drivers] staging/lustre: fix sparse warnings

On Tue, Nov 25, 2014 at 02:40:36AM +0300, Dan Carpenter wrote:
> On Mon, Nov 24, 2014 at 07:55:41PM +0100, Zahari Doychev wrote:
> > --- a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
> > +++ b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
> > @@ -784,7 +784,8 @@ lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
> >  		   unsigned int nsiov, struct iovec *siov, unsigned int soffset,
> >  		   unsigned int nob)
> >  {
> > -	struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
> > +	struct iovec diov = {/*.iov_base = */ (void __user *)dest,
> > +			     /*.iov_len = */ dlen};
> >  
> 
> Why can't we just make the comments into code by removing the /*
> characters?  Remove the cast by declaring the data as __user data to
> begin with instead of declaring it incorrectly and then casting to the
> correct type later.

If I make the declarations right then I am moving the casts to other functions.
I was not sure which one is better but it is not a problem I will fix this.

> 
> Also it's not allowed to send two patches with the exact same subject.
> Also the subject was sucky and too vague anyway.  :)

Sorry for that.

regards,
Zahari

> 
> regards,
> dan carpenter
> 
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