linux-kernel - RE: [PATCH] bitfield: avoid gcc-8 -Wint-in-bool-context warning

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Message-ID: <74bd14d45d2b47978218517093ae9de1@AcuMS.aculab.com>
Date:   Tue, 14 Aug 2018 10:06:31 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Johannes Berg' <johannes@...solutions.net>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Arnd Bergmann <arnd@...db.de>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] bitfield: avoid gcc-8 -Wint-in-bool-context warning

From: Johannes Berg
> Sent: 14 August 2018 08:57
...
> > How about fixing the root cause
> > in drivers/net/wireless/intel/iwlwifi/fw/api/rx.h ?
> >
> >
> > #define IWL_RX_HE_PHY_SIBG_SYM_OR_USER_NUM_MASK   0x1e00000000ULL
> >
> >
> > enum iwl_rx_he_phy looks really strange.
> 
> Why? I don't think this is a problem, the enum is used here to get
> constants so that we can also have documentation for them. That's a
> common and accepted technique.

It would be much more useful to indicate where the values are used.
Such a field/parameter could (probably) have the type of the enum.
But, at some point, the compiler might start barfing at that at well.

There are also a whole load of crappy __packed in that header file.
There might be one or two 64bit items on 32bit boundaries but
that can be solved without using __packed.

	David

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