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Message-ID: <alpine.DEB.2.21.2402240235570.61493@angie.orcam.me.uk>
Date: Sat, 24 Feb 2024 02:55:01 +0000 (GMT)
From: "Maciej W. Rozycki" <macro@...am.me.uk>
To: Sam Ravnborg <sam@...nborg.org>
cc: Miquel Raynal <miquel.raynal@...tlin.com>, sparclinux@...r.kernel.org,
linux-parport@...ts.infradead.org, "David S. Miller" <davem@...emloft.net>,
Andreas Larsson <andreas@...sler.com>,
Randy Dunlap <rdunlap@...radead.org>, Arnd Bergmann <arnd@...db.de>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] sparc32: Do not select GENERIC_ISA_DMA
On Fri, 23 Feb 2024, Sam Ravnborg via B4 Relay wrote:
> sparc32 do not support generic isa dma, so do not select the symbol.
> Without this fix, the following patch would break the build with a
> missing prototype.
Not according to my observations, kernel/dma.c is always built for
GENERIC_ISA_DMA configurations, so:
kernel/dma.c:70:5: error: no previous prototype for 'request_dma' [-Werror=missing-prototypes]
70 | int request_dma(unsigned int dmanr, const char * device_id)
| ^~~~~~~~~~~
kernel/dma.c:88:6: error: no previous prototype for 'free_dma' [-Werror=missing-prototypes]
88 | void free_dma(unsigned int dmanr)
| ^~~~~~~~
are issued regardless (and FAOD with PARPORT_PC unset).
I can't speak for SPARC support for ISA DMA, but it seems to me like the
second sentence would best be removed, as would the Fixes: tag (in favour
to:
Fixes: 0fcb70851fbf ("Makefile.extrawarn: turn on missing-prototypes globally")
I presume), and possibly the messages quoted above included instead.
Maciej
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