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

[Li Yang]

On Mon, Apr 19, 2010 at 10:34 AM, Michael Ellerman
<michael at ellerman.id.au> wrote:
> On Fri, 2010-04-16 at 15:34 +0800, Li Yang wrote:
>> From: Zhao Chenhui <b26998 at freescale.com>
>>
>> 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 <b26998 at freescale.com>
>> Signed-off-by: Li Yang <leoli at freescale.com>
>> ---
>>  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.

Oops.  We thought the property to be {start end} by mistake.  The
change shouldn't be needed.

Thanks,
Leo