On Thu, Aug 08, 2019 at 04:46:46PM -0700, Sowjanya Komatineni wrote:
> This patch adds an API clk_hw_get_parent_index to get index of the
> clock parent to use during the clock restore operations on system
> resume.
> 
> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
> ---
>  drivers/clk/clk.c            | 17 +++++++++++++++++
>  include/linux/clk-provider.h |  1 +
>  2 files changed, 18 insertions(+)
> 
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index c0990703ce54..f26252e48f73 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -1643,6 +1643,23 @@ static int clk_fetch_parent_index(struct clk_core *core,
>  	return i;
>  }
>  
> +/**
> + * clk_hw_get_parent_index - return the index of parent clock
> + * @hw: clk_hw associated with the clk being consumed
> + * @parent_hw: clk_hw associated with the parent of clk
> + *
> + * Fetches and returns the index of parent clock.
> + * if hw or parent_hw is NULL, returns -EINVAL.

"If" because it's at the beginning of a sentence. You may also want to
turn this into a "Return:" section as described in:

	Documentation/doc-guide/kernel-doc.rst

That said, other functions in this file don't use that construct either,
so I suppose this is fine as-is, for consistency.

So with the capitalization of "If" fixed, this is:

Reviewed-by: Thierry Reding <treding@nvidia.com>