From mboxrd@z Thu Jan  1 00:00:00 1970
From: mulyadi.santosa@gmail.com (Mulyadi Santosa)
Date: Tue, 21 Jun 2011 12:22:12 +0700
Subject: request_mem_region
In-Reply-To: <BANLkTimOEovCf3CZPk_+WE1Uj1rQL9fu_Q@mail.gmail.com>
References: <BANLkTimOEovCf3CZPk_+WE1Uj1rQL9fu_Q@mail.gmail.com>
Message-ID: <BANLkTimS6-=k9Lxn6E2S0FEiR_jHJUrv2A@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On 20/06/2011, Daniel Redway <daniel.redway85@gmail.com> wrote:
> Hello
>
> As I understand ioremap() maps and returns virtual address
> for a given physical(bus) address associated with my PCI card.
> That is cool and clear.
>
>
> What is the purpose of request_mem_region()?

checking http://lxr.linux.no/linux+v2.6.39/kernel/resource.c#L732, I
think that function generally says "alright,I wanna reserve this
memory region, so no one may touch it....until I mark it as free
again"

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com