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

[Peter Robinson]

On Thu, Apr 28, 2016 at 3:07 AM, Peng Fan <van.freenix at 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 at gmail.com>
> Signed-off-by: Peng Fan <van.freenix at gmail.com>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Fabio Estevam <fabio.estevam at nxp.com>
> Cc: Tom Rini <trini at konsulko.com>
> Cc: Anatolij Gustschin <agust at denx.de>
> Cc: Peter Robinson <pbrobinson at gmail.com>
Tested-by: Peter Robinson <pbrobinson at 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
>