From: mina86@mina86.com (Michal Nazarewicz)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] dma-buf: add helpers for attacher dma-parms
Date: Mon, 06 Aug 2012 13:58:32 +0200 [thread overview]
Message-ID: <xa1tobmoxmdz.fsf@mina86.com> (raw)
In-Reply-To: <501F9C8E.4080002@samsung.com>
Tomasz Stanislawski <t.stanislaws@samsung.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, Micha? ?mina86? Nazarewicz (o o)
ooo +----<email/xmpp: mpn@google.com>--------------ooO--(_)--Ooo--
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From: Michal Nazarewicz <mina86@mina86.com>
To: Tomasz Stanislawski <t.stanislaws@samsung.com>,
Rob Clark <rob.clark@linaro.org>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org,
linux-media@vger.kernel.org, patches@linaro.org,
linux@arm.linux.org.uk, arnd@arndb.de, jesse.barker@linaro.org,
m.szyprowski@samsung.com, daniel@ffwll.ch, sumit.semwal@ti.com,
maarten.lankhorst@canonical.com, Rob Clark <rob@ti.com>
Subject: Re: [PATCH 2/2] dma-buf: add helpers for attacher dma-parms
Date: Mon, 06 Aug 2012 13:58:32 +0200 [thread overview]
Message-ID: <xa1tobmoxmdz.fsf@mina86.com> (raw)
In-Reply-To: <501F9C8E.4080002@samsung.com>
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Tomasz Stanislawski <t.stanislaws@samsung.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@google.com>--------------ooO--(_)--Ooo--
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next prev parent reply other threads:[~2012-08-06 11:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-19 16:23 [PATCH 0/2] dma-parms and helpers for dma-buf Rob Clark
2012-07-19 16:23 ` Rob Clark
2012-07-19 16:23 ` Rob Clark
2012-07-19 16:23 ` [PATCH 1/2] device: add dma_params->max_segment_count Rob Clark
2012-07-19 16:23 ` Rob Clark
2012-07-19 16:23 ` Rob Clark
2012-07-20 6:20 ` Marek Szyprowski
2012-07-20 6:20 ` Marek Szyprowski
2012-07-20 6:20 ` Marek Szyprowski
2012-07-19 16:23 ` [PATCH 2/2] dma-buf: add helpers for attacher dma-parms Rob Clark
2012-07-19 16:23 ` Rob Clark
2012-07-19 16:23 ` Rob Clark
2012-07-20 16:39 ` Rob Clark
2012-07-20 16:39 ` Rob Clark
2012-07-20 16:39 ` Rob Clark
2012-08-06 6:37 ` Semwal, Sumit
2012-08-06 6:37 ` Semwal, Sumit
2012-08-06 6:37 ` Semwal, Sumit
2012-08-06 10:29 ` Tomasz Stanislawski
2012-08-06 10:29 ` Tomasz Stanislawski
2012-08-06 10:29 ` Tomasz Stanislawski
2012-08-06 11:58 ` Michal Nazarewicz [this message]
2012-08-06 11:58 ` Michal Nazarewicz
2012-08-06 12:42 ` Tomasz Stanislawski
2012-08-06 12:42 ` Tomasz Stanislawski
2012-08-06 12:42 ` Tomasz Stanislawski
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