request_mem_region

Mulyadi Santosa mulyadi.santosa at gmail.com
Tue Jun 21 01:22:12 EDT 2011


On 20/06/2011, Daniel Redway <daniel.redway85 at 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



More information about the Kernelnewbies mailing list