Subject: Re: [PATCH 3/4] fsl_msi: enable msi sharing through AMP OSes

From: Michael Ellerman <[email-masked]>
Date: Mon, 19 Apr 2010 12:34:09 +1000

On Fri, 2010-04-16 at 15:34 +0800, Li Yang wrote:
> From: Zhao Chenhui <[email-masked]>
> 
> Make a single PCIe MSI bank shareable through CAMP OSes. The number of
> MSI used by each core can be configured by dts file.
> 
> Signed-off-by: Zhao Chenhui <[email-masked]>
> Signed-off-by: Li Yang <[email-masked]>
> ---
>  arch/powerpc/sysdev/fsl_msi.c    |    8 +++++++-
>  arch/powerpc/sysdev/msi_bitmap.c |    4 ++--
>  2 files changed, 9 insertions(+), 3 deletions(-)
..
> diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c
> index 5a32cbe..b41db96 100644
> --- a/arch/powerpc/sysdev/msi_bitmap.c
> +++ b/arch/powerpc/sysdev/msi_bitmap.c
> @@ -95,8 +95,8 @@ int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp)
>  	/* Format is: (<u32 start> <u32 count>)+ */
>  	len /= 2 * sizeof(u32);
>  	for (i = 0; i < len; i++, p += 2) {
> -		for (j = 0; j < *(p + 1); j++)
> -			bitmap_release_region(bmp->bitmap, *p + j, 0);
> +		for (j = *p; j < *(p + 1); j++)
> +			bitmap_release_region(bmp->bitmap, j, 0);
>  	}
>  
>  	spin_unlock(&bmp->lock);

This looks like a bug fix to the msi bitmap code, is it not? Please
split it into a separate commit with an explanatory changelog.

cheers