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From: Albert ARIBAUD <albert.aribaud@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH V2 3/6] mv_egiga: bugfix: DMA issue fixed using volatile
Date: Fri, 09 Jul 2010 13:53:50 +0200	[thread overview]
Message-ID: <4C370DCE.2020108@free.fr> (raw)
In-Reply-To: <F766E4F80769BD478052FB6533FA745D19A4A5D432@SC-VEXCH4.marvell.com>

Le 09/07/2010 13:11, Prafulla Wadaskar a ?crit :

> You can use volatile qualifier for the variables in DMA specific code instead of modifying structures,
> Try to use memory barrier or something like that-
> Some ref : http://gcc.gnu.org/ml/gcc/2003-04/msg01180.html
> may be someone c-expert on the list can suggest better

Seems we've followed the same line of reasoning. :)

I'll look into forcing a sequence point without resorting to asm.

Amicalement,
-- 
Albert.

  reply	other threads:[~2010-07-09 11:53 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-09  6:34 [U-Boot] [PATCH V2 0/6] Marvell egiga multiple SoC support Albert Aribaud
2010-07-09  6:34 ` [U-Boot] [PATCH V2 1/6] net: rename: kirkwood_egiga as mv_egiga Albert Aribaud
2010-07-09  6:34   ` [U-Boot] [PATCH V2 2/6] mv_egiga: support SoCs other than kirkwood Albert Aribaud
2010-07-09  6:34     ` [U-Boot] [PATCH V2 3/6] mv_egiga: bugfix: DMA issue fixed using volatile Albert Aribaud
2010-07-09  6:34       ` [U-Boot] [PATCH V2 4/6] mv_egiga: only randomize MAC on kirkwood Albert Aribaud
2010-07-09  6:34         ` [U-Boot] [PATCH V2 5/6] mv_egiga: add support for orion5x egiga controller Albert Aribaud
2010-07-09  6:34           ` [U-Boot] [PATCH V2 6/6] edminiv2: add ethernet support Albert Aribaud
2010-07-09  8:58         ` [U-Boot] [PATCH V2 4/6] mv_egiga: only randomize MAC on kirkwood Prafulla Wadaskar
2010-07-09  9:17           ` Albert ARIBAUD
2010-07-09  9:16       ` [U-Boot] [PATCH V2 3/6] mv_egiga: bugfix: DMA issue fixed using volatile Prafulla Wadaskar
2010-07-09  9:54         ` Albert ARIBAUD
2010-07-09 11:11           ` Prafulla Wadaskar
2010-07-09 11:53             ` Albert ARIBAUD [this message]
2010-07-09 13:00               ` Albert ARIBAUD
2010-07-10  6:41                 ` Prafulla Wadaskar
2010-07-09 11:51           ` [U-Boot] mv_egiga: effect on making struct members volatile(was: [PATCH V2 3/6] mv_egiga: bugfix: DMA issue fixed using volatile) Albert ARIBAUD
2010-07-09  9:08   ` [U-Boot] [PATCH V2 1/6] net: rename: kirkwood_egiga as mv_egiga Prafulla Wadaskar

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