On Thu, 2017-01-26 at 21:44 +0200, Jani Nikula wrote:
> Rename the function, move it at the top, and reuse in
> intel_dp_link_rate_index(). If there was a reason in the past to use
> reverse search order here, there isn't now.
>
> Cc: Manasi Navare <manasi.d.nav...@intel.com>
> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
> Signed-off-by: Jani Nikula <jani.nik...@intel.com>
> ---
> drivers/gpu/drm/i915/intel_dp.c | 33 ++++++++++++++-------------------
> 1 file changed, 14 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 1d66737a3a0f..f3068ff670a1 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -266,6 +266,17 @@ static int intersect_rates(const int *source_rates, int
> source_len,
> return k;
> }
>
> +static int intel_dp_find_rate(const int *rates, int len, int rate)
I wonder if the function name can be more intuitive. The argument is
rate and the function name indicates it also returns rate. I can't tell
what the function does by it's name. Feel free to ignore this comment as
I might be missing some context.
-DK
> +{
> + int i;
> +
> + for (i = 0; i < len; i++)
> + if (rate == rates[i])
> + return i;
> +
> + return -1;
> +}
> +
> static int intel_dp_common_rates(struct intel_dp *intel_dp,
> int *common_rates)
> {
> @@ -284,15 +295,10 @@ static int intel_dp_link_rate_index(struct intel_dp
> *intel_dp,
> int *common_rates, int link_rate)
> {
> int common_len;
> - int index;
>
> common_len = intel_dp_common_rates(intel_dp, common_rates);
> - for (index = 0; index < common_len; index++) {
> - if (link_rate == common_rates[common_len - index - 1])
> - return common_len - index - 1;
> - }
>
> - return -1;
> + return intel_dp_find_rate(common_rates, common_len, link_rate);
> }
>
> int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
> @@ -1542,17 +1548,6 @@ bool intel_dp_read_desc(struct intel_dp *intel_dp)
> return true;
> }
>
> -static int rate_to_index(const int *rates, int len, int rate)
> -{
> - int i;
> -
> - for (i = 0; i < len; i++)
> - if (rate == rates[i])
> - return i;
> -
> - return -1;
> -}
> -
> int
> intel_dp_max_link_rate(struct intel_dp *intel_dp)
> {
> @@ -1568,8 +1563,8 @@ intel_dp_max_link_rate(struct intel_dp *intel_dp)
>
> int intel_dp_rate_select(struct intel_dp *intel_dp, int rate)
> {
> - int i = rate_to_index(intel_dp->sink_rates, intel_dp->num_sink_rates,
> - rate);
> + int i = intel_dp_find_rate(intel_dp->sink_rates,
> + intel_dp->num_sink_rates, rate);
>
> if (WARN_ON(i < 0))
> i = 0;
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