linux-kernel - Re: [0/2] powerpc/powernv/vas: Adjustments for two function implementations

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Message-ID: <33a38d7e-26da-46e0-90d4-7137f9ec0c90@web.de>
Date: Tue, 16 Apr 2024 14:14:27 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Christophe Leroy <christophe.leroy@...roup.eu>,
 Michael Ellerman <mpe@...erman.id.au>,
 "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
 "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
 "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
 "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
 Nicholas Piggin <npiggin@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>, cocci@...ia.fr
Subject: Re: [0/2] powerpc/powernv/vas: Adjustments for two function
 implementations

> This is explicit in Kernel documentation:
>
> /**
>   * kfree - free previously allocated memory
>   * @object: pointer returned by kmalloc() or kmem_cache_alloc()
>   *
>   * If @object is NULL, no operation is performed.
>   */
>
> That's exactly the same behaviour as free() in libc.
>
> So Coccinelle should be fixed if it reports an error for that.

Redundant function calls can occasionally be avoided accordingly,
can't they?

Regards,
Markus