Re: [patch] libsas: dereferencing variable before check

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On Thu, May 13, 2010 at 09:31:54AM -0500, James Bottomley wrote:
> On Thu, 2010-05-13 at 01:08 +0200, Tejun Heo wrote:
> > 
> > "Dan Carpenter" <error27@xxxxxxxxx> wrote:
> > 
> > >The "qc->scsicmd" could be null so I moved the dereference inside the
> > >check.  This was introduced by 70b25f890: "[SCSI] fix locking around
> > >blk_abort_request()" 
> > >
> > >Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
> > 
> > Ooh.. right.
> > 
> > Asked-by: Tejun Heo <tj@xxxxxxxxxx>
> 
> Well, oops, yes.  Two patches to fix one bug is a bit overboard, I
> think, plus some code rearrangement to fix the locality of the problem
> and ensure it doesn't happen again might be useful.  What about this.
> 

Looks good.

Acked-by: Dan Carpenter <error27@xxxxxxxxx>

regards,
dan carpenter

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