linux-kernel - Re: [PATCHv2 4/4] ARM: dma-mapping: remove custom consistent dma region

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Message-ID: <4FC5659D.6040805@gmail.com>
Date:	Tue, 29 May 2012 20:11:09 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
CC:	linux-arm-kernel@...ts.infradead.org,
	linaro-mm-sig@...ts.linaro.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Arnd Bergmann <arnd@...db.de>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Chunsang Jeong <chunsang.jeong@...aro.org>,
	Krishna Reddy <vdumpa@...dia.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Subash Patel <subashrp@...il.com>, kosaki.motohiro@...il.com
Subject: Re: [PATCHv2 4/4] ARM: dma-mapping: remove custom consistent dma
 region

>   static void *
>   __dma_alloc_remap(struct page *page, size_t size, gfp_t gfp, pgprot_t prot,
>   	const void *caller)
>   {
> -	struct arm_vmregion *c;
> -	size_t align;
> -	int bit;
> +	struct vm_struct *area;
> +	unsigned long addr;
> 
> -	if (!consistent_pte) {
> -		printk(KERN_ERR "%s: not initialised\n", __func__);
> +	area = get_vm_area_caller(size, VM_DMA | VM_USERMAP, caller);

In this patch, VM_DMA is only used here. So, is this no effect?

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