From: Viresh Kumar Date: Tue, 10 Jun 2014 04:57:12 +0000 (+0530) Subject: cpufreq: tegra: update comment for clarity X-Git-Url: http://git.efficios.com/?a=commitdiff_plain;h=40cc5490132075d7be85a4483caa0a7264f45ed4;p=deliverable%2Flinux.git cpufreq: tegra: update comment for clarity Tegra's driver got updated a bit (00917dd cpufreq: Tegra: implement intermediate frequency callbacks) and implements new 'intermediate freq' infrastructure of core. Above commit updated comments about when to call clk_prepare_enable(pll_x_clk) and Doug wasn't satisfied with those comments and said this: > The "Though when target-freq is intermediate freq, we don't need to > take this reference." makes me think that this function is actually > called when target-freq is intermediate freq.  I don't think it is, > right? For better clarity just make that comment more explicit about when we call tegra_target_intermediate(). Reviewed-by: Stephen Warren Reported-and-reviewed-by: Doug Anderson Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/cpufreq/tegra-cpufreq.c b/drivers/cpufreq/tegra-cpufreq.c index a5fbc0a8d897..8084c7f7e206 100644 --- a/drivers/cpufreq/tegra-cpufreq.c +++ b/drivers/cpufreq/tegra-cpufreq.c @@ -71,9 +71,12 @@ static int tegra_target_intermediate(struct cpufreq_policy *policy, /* * Take an extra reference to the main pll so it doesn't turn * off when we move the cpu off of it as enabling it again while we - * switch to it from tegra_target() would take additional time. Though - * when target-freq is intermediate freq, we don't need to take this - * reference. + * switch to it from tegra_target() would take additional time. + * + * When target-freq is equal to intermediate freq we don't need to + * switch to an intermediate freq and so this routine isn't called. + * Also, we wouldn't be using pll_x anymore and must not take extra + * reference to it, as it can be disabled now to save some power. */ clk_prepare_enable(pll_x_clk);