On Tue, 19 Jul 2016, SF Markus Elfring wrote:

> > From: Markus Elfring <[email protected]>
> > Date: Mon, 16 Nov 2015 08:20:36 +0100
> > 
> > The mempool_destroy() function tests whether its argument is NULL
> > and then returns immediately. Thus the test around the calls is not needed.
> > 
> > This issue was detected by using the Coccinelle software.
> > 
> > Signed-off-by: Markus Elfring <[email protected]>
> > ---
> >  arch/sh/kernel/dwarf.c | 6 ++----
> >  1 file changed, 2 insertions(+), 4 deletions(-)
> > 
> > diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
> > index 9d209a0..e1d751a 100644
> > --- a/arch/sh/kernel/dwarf.c
> > +++ b/arch/sh/kernel/dwarf.c
> > @@ -1009,10 +1009,8 @@ static void __init dwarf_unwinder_cleanup(void)
> >     rbtree_postorder_for_each_entry_safe(cie, next_cie, &cie_root, node)
> >             kfree(cie);
> >  
> > -   if (dwarf_reg_pool)
> > -           mempool_destroy(dwarf_reg_pool);
> > -   if (dwarf_frame_pool)
> > -           mempool_destroy(dwarf_frame_pool);
> > +   mempool_destroy(dwarf_reg_pool);
> > +   mempool_destroy(dwarf_frame_pool);
> >     kmem_cache_destroy(dwarf_reg_cachep);
> >     kmem_cache_destroy(dwarf_frame_cachep);
> >  }
> > 
> 
> How do you think about to integrate this update suggestion
> into another source code repository?
> 

Your patch is fine, but you may want to send it to the maintainers 
directly to merge.

$ ./scripts/get_maintainer.pl -f arch/sh/kernel/dwarf.c
Yoshinori Sato <[email protected]> (maintainer:SUPERH)
Rich Felker <[email protected]> (maintainer:SUPERH)
[email protected] (open list:SUPERH)
[email protected] (open list)

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