linux-kernel - Re: [PATCH 2/2] dma-buf: add helpers for attacher dma-parms

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Date:	Mon, 06 Aug 2012 13:58:32 +0200
From:	Michal Nazarewicz <mina86@...a86.com>
To:	Tomasz Stanislawski <t.stanislaws@...sung.com>,
	Rob Clark <rob.clark@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mm@...ck.org, linaro-mm-sig@...ts.linaro.org,
	dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
	patches@...aro.org, linux@....linux.org.uk, arnd@...db.de,
	jesse.barker@...aro.org, m.szyprowski@...sung.com, daniel@...ll.ch,
	sumit.semwal@...com, maarten.lankhorst@...onical.com,
	Rob Clark <rob@...com>
Subject: Re: [PATCH 2/2] dma-buf: add helpers for attacher dma-parms


Tomasz Stanislawski <t.stanislaws@...sung.com> writes:
> I recommend to change the semantics for unlimited number of segments
> from 'value 0' to:
>
> #define DMA_SEGMENTS_COUNT_UNLIMITED ((unsigned long)INT_MAX)
>
> Using INT_MAX will allow using safe conversions between signed and
> unsigned integers.

LONG_MAX seems cleaner regardless.

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
ooo +----<email/xmpp: mpn@...gle.com>--------------ooO--(_)--Ooo--

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