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From: Michael Schmitz <schmitzmic@gmail.com>
To: Finn Thain <fthain@telegraphics.com.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
	linux-m68k@lists.linux-m68k.org,
	Michael Schmitz <schmitz@debian.org>
Subject: Re: [m68k:m68k-queue 8/13] drivers/usb/host/isp116x.h:370:87: note: in expansion of macro 'isa_rom_writew_raw'
Date: Sun, 31 May 2020 10:45:52 +1200	[thread overview]
Message-ID: <b69901cc-3ebe-125b-d1af-dee3230a16b6@gmail.com> (raw)
In-Reply-To: <alpine.LNX.2.22.394.2005300930210.8@nippy.intranet>

Hi Finn,

Am 30.05.2020 um 11:32 schrieb Finn Thain:
> On Sat, 30 May 2020, Michael Schmitz wrote:
>
>> Hi Geert,
>>
>> the __w is used as a dummy read variable to execute a read cycle where
>> the address encodes the value to be written to the peripheral on the ROM
>> port. The value of this dummy variable is of no consequence (and may
>> very well be undefined).
>>
>> How do I annotate this so the compiler will shut up about it?
>>
>
> I think you want 'u16 __maybe_unused __w'.

Spot on, thanks.

Cheers,

	Michael



      reply	other threads:[~2020-05-30 22:45 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-29 18:19 [m68k:m68k-queue 8/13] drivers/usb/host/isp116x.h:370:87: note: in expansion of macro 'isa_rom_writew_raw' kbuild test robot
2020-05-29 23:23 ` Michael Schmitz
2020-05-29 23:32   ` Finn Thain
2020-05-30 22:45     ` Michael Schmitz [this message]

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