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Re: [patch net v3] net: fec: fix compile with CONFIG_M5272

From Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Newsgroups linux.kernel
Subject Re: [patch net v3] net: fec: fix compile with CONFIG_M5272
Date 2016-12-05 19:10 +0100
Message-ID <sL5Sa-7U6-33@gated-at.bofh.it> (permalink)
References <sL5yO-7xB-17@gated-at.bofh.it> <sL5Sa-7U6-35@gated-at.bofh.it>
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>     +#define FEC_STATS_SIZE         (ARRAY_SIZE(fec_stats) * sizeof(u64))
> 
> 
> Do I take it right this actually translates to (sizeof(fec_stats) /
> sizeof(u64) * sizeof(u64))?

No.

fec_stats is an array of structs, each struct has car arrsy and integer,
and size of that is definitely not bytes.


ARRAY_SIZE(fec_stats) is number of stats, i.e. it is returned from
fec_enet_get_sset_count()

Each stat in blob is u64. Thus (ARRAY_SIZE(fec_stats) * sizeof(u64)) is
size of stats blob.

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Thread

[patch net v3] net: fec: fix compile with CONFIG_M5272 Nikita Yushchenko <nikita.yoush@cogentembedded.com> - 2016-12-05 18:50 +0100
  Re: [patch net v3] net: fec: fix compile with CONFIG_M5272 Nikita Yushchenko <nikita.yoush@cogentembedded.com> - 2016-12-05 19:10 +0100
  Re: [patch net v3] net: fec: fix compile with CONFIG_M5272 David Miller <davem@davemloft.net> - 2016-12-06 02:00 +0100

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