[U-Boot] [PATCH] video: ipu_common: fix build error

[Stefano Babic <sbabic@denx.de>]

On 28/04/2016 16:20, Peter Robinson wrote:
> On Thu, Apr 28, 2016 at 3:07 AM, Peng Fan <van.freenix@gmail.com> wrote:
>> Some toolchains fail to build
>> "clk->rate = (u64)(clk->parent->rate * 16) / div;"
>> And the cast usage is wrong.
>>
>> Use the following code to fix the issue,
>> "
>>   do_div(parent_rate, div);
>>   clk->rate = parent_rate;
>> "
>>
>> Reported-by: Peter Robinson <pbrobinson@gmail.com>
>> Signed-off-by: Peng Fan <van.freenix@gmail.com>
>> Cc: Stefano Babic <sbabic@denx.de>
>> Cc: Fabio Estevam <fabio.estevam@nxp.com>
>> Cc: Tom Rini <trini@konsulko.com>
>> Cc: Anatolij Gustschin <agust@denx.de>
>> Cc: Peter Robinson <pbrobinson@gmail.com>
> Tested-by: Peter Robinson <pbrobinson@gmail.com>
> 
>> ---
>>
>> Hi Peter,
>>
>>  Please help test this patch to see whether this fix your issue or not.
>>  Thanks for pointing out this issue.
> 
> It fixes the build issue, I'll be installing it onto a number of
> devices over the next couple of days.
> 
> Thanks,
> Peter
> 
>> Thanks,
>> Peng.
>>
>>  drivers/video/ipu_common.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/video/ipu_common.c b/drivers/video/ipu_common.c
>> index 36d4b23..5676a0f 100644
>> --- a/drivers/video/ipu_common.c
>> +++ b/drivers/video/ipu_common.c
>> @@ -352,7 +352,9 @@ static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate)
>>          */
>>         __raw_writel((div / 16) << 16, DI_BS_CLKGEN1(clk->id));
>>
>> -       clk->rate = (u64)(clk->parent->rate * 16) / div;
>> +       do_div(parent_rate, div);
>> +
>> +       clk->rate = parent_rate;
>>
>>         return 0;
>>  }
>> --
>> 2.6.2
>>

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


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