[PATCH] ARM: use memblock memory regions for "System RAM" I/O resources

Russell King - ARM Linux linux at arm.linux.org.uk
Wed Jan 12 18:11:38 EST 2011


On Wed, Jan 12, 2011 at 02:35:57PM -0800, Dima Zavin wrote:
> Do not use memory bank info to request the "system ram" resources as
> they do not track holes created by memblock_remove inside
> machine's reserve callback. If the removed memory is passed as
> platform_device's ioresource, then drivers that call
> request_mem_region would fail due to a conflict with the incorrectly
> configured system ram resource.
> 
> Instead, iterate through the regions of memblock.memory and add
> those as "System RAM" resources.
> 
> Signed-off-by: Dima Zavin <dima at android.com>
> ---
>  arch/arm/kernel/setup.c |   10 ++++------
>  1 files changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
> index 336f14e..c3aa394 100644
> --- a/arch/arm/kernel/setup.c
> +++ b/arch/arm/kernel/setup.c
> @@ -520,6 +520,7 @@ setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
>  static void __init
>  request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)

Doesn't this means we can get rid of the 'mi' argument?



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