Re: [Linaro-mm-sig] [v4 0/4] ARM: dma-mapping: IOMMU atomic allocation

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