Messages in this thread | | | Date | Tue, 28 Aug 2012 18:51:00 +0200 | From | Marek Szyprowski <> | Subject | Re: [v4 0/4] ARM: dma-mapping: IOMMU atomic allocation |
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Hello,
On 8/28/2012 7:13 AM, Hiroshi Doyu wrote: > The commit e9da6e9 "ARM: dma-mapping: remove custom consistent dma > region" breaks the compatibility with existing drivers. This causes > the following kernel oops(*1). That driver has called dma_pool_alloc() > to allocate memory from the interrupt context, and it hits > BUG_ON(in_interrpt()) in "get_vm_area_caller()". This patch seris > fixes this problem with making use of the pre-allocate atomic memory > pool which DMA is using in the same way as DMA does now. > > Any comment would be really appreciated.
Looks fine now. I will do some tests and apply them to my fixes-for-3.6 branch. Thanks for Your contribution!
Best regards -- Marek Szyprowski Samsung Poland R&D Center
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