Hi Yong,
On Mon, Oct 29, 2018 at 03:23:00PM -0700, Yong Zhi wrote:
> From: Tomasz Figa <tfiga@xxxxxxxxxxxx>
>
> This driver translates IO virtual address to physical
> address based on two levels page tables.
>
> Signed-off-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>
> Signed-off-by: Yong Zhi <yong.zhi@xxxxxxxxx>
> ---
...
> +static void call_if_ipu3_is_powered(struct ipu3_mmu *mmu,
> + void (*func)(struct ipu3_mmu *mmu))
> +{
> + pm_runtime_get_noresume(mmu->dev);
> + if (pm_runtime_active(mmu->dev))
> + func(mmu);
> + pm_runtime_put(mmu->dev);
How about:
if (!pm_runtime_get_if_in_use(mmu->dev))
return;
func(mmu);
pm_runtime_put(mmu->dev);
> +}
--
Sakari Ailus
sakari.ailus@xxxxxxxxxxxxxxx
