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Date: Fri, 1 Jan 2016 15:45:15 +0100
From: Francois Romieu <romieu@...zoreil.com>
To: Julia Lawall <julia.lawall@...6.fr>
Cc: SF Markus Elfring <elfring@...rs.sourceforge.net>,
netdev@...r.kernel.org,
Claudiu Manoil <claudiu.manoil@...escale.com>,
LKML <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/3] net-gianfar: Less function calls in
gfar_ethflow_to_filer_table() after error detection
Julia Lawall <julia.lawall@...6.fr> :
> On Fri, 1 Jan 2016, SF Markus Elfring wrote:
[...]
> > > Normally, one returns -ENOMEM for this case, but it looks like this
> > > function is returning 0 on failure.
> >
> > Should a symbol like "false" be used instead of such a special number?
>
> Maybe it's better than 0 and 1...
Your suggestion about -ENOMEM is consistent with the callchain. Nothing
else is needed.
Btw:
1. kfree does not care about NULL parameter, especially in this hardly
timing sensitive path.
2. kmalloc_array for small kernel controlled arrays of integers (see
drivers/net/ethernet/freescale/gianfar.h), seriously ?
I'd suggest the janitor to introduce a dedicated struct to embed both
gfar_private.ftp_rqf{p, c}r then use a single, plain kmalloc in
gfar_ethflow_to_filer_table.
Happy tasteful 2016 :o)
--
Ueimor
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