* [patch 1/1] arm: bcmring: Fix locking in dma_unmap
[not found] ` <20100129112739.265153293@linutronix.de>
@ 2010-01-29 20:22 ` Leo (Hao) Chen
0 siblings, 0 replies; only message in thread
From: Leo (Hao) Chen @ 2010-01-29 20:22 UTC (permalink / raw)
To: linux-arm-kernel
Thanks Thomas for fixing this bug.
Acked-by: Leo Chen <leochen@broadcom.com>
On Fri, Jan 29, 2010 at 03:28:45AM -0800, Thomas Gleixner wrote:
> dma_unmap is missing a down(&memMap->lock).
>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Cc: Leo Chen <leochen@broadcom.com>
> Cc: Scott Branden <sbranden@broadcom.com>
> Cc: linux-arm-kernel at lists.infradead.org
> ---
> arch/arm/mach-bcmring/dma.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> Index: linux-2.6-tip/arch/arm/mach-bcmring/dma.c
> ===================================================================
> --- linux-2.6-tip.orig/arch/arm/mach-bcmring/dma.c
> +++ linux-2.6-tip/arch/arm/mach-bcmring/dma.c
> @@ -2225,6 +2225,8 @@ int dma_unmap(DMA_MemMap_t *memMap, /* S
> DMA_Region_t *region;
> DMA_Segment_t *segment;
>
> + down(&memMap->lock);
> +
> for (regionIdx = 0; regionIdx < memMap->numRegionsUsed; regionIdx++) {
> region = &memMap->region[regionIdx];
>
>
>
>
--
Leo Hao Chen
------------------------
Life is short, run long.
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[not found] ` <20100129112739.265153293@linutronix.de>
2010-01-29 20:22 ` [patch 1/1] arm: bcmring: Fix locking in dma_unmap Leo (Hao) Chen
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