From: Michael Turquette <mturquette@baylibre.com>
To: Jerome Brunet <jbrunet@baylibre.com>,
"Stephen Boyd" <sboyd@codeaurora.org>
Cc: "Jerome Brunet" <jbrunet@baylibre.com>,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
"Russell King" <linux@armlinux.org.uk>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Quentin Schulz" <quentin.schulz@free-electrons.com>,
"Kevin Hilman" <khilman@baylibre.com>
Subject: Re: [PATCH v4 09/10] clk: add clk_rate_exclusive api
Date: Thu, 26 Oct 2017 07:26:13 +0200 [thread overview]
Message-ID: <150899557300.90597.9865127803541159465@resonance> (raw)
In-Reply-To: <20170924200030.6227-10-jbrunet@baylibre.com>
Hi Jerome,
Quoting Jerome Brunet (2017-09-24 22:00:29)
> @@ -1778,6 +1867,50 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
> EXPORT_SYMBOL_GPL(clk_set_rate);
>
> /**
> + * clk_set_rate_exclusive - specify a new rate get exclusive control
> + * @clk: the clk whose rate is being changed
> + * @rate: the new rate for clk
> + *
> + * This is a combination of clk_set_rate() and clk_rate_exclusive_get()
> + * within a critical section
> + *
> + * This can be used initially to ensure that at least 1 consumer is
> + * statisfied when several consumers are competing for exclusivity over the
> + * same clock provider.
Please add the following here:
Calls to clk_rate_exclusive_get() should be balanced with calls to
clk_rate_exclusive_put().
Otherwise looks good to me.
Best regards,
Mike
next prev parent reply other threads:[~2017-10-31 17:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-24 20:00 [PATCH v4 00/10] clk: implement clock rate protection mechanism Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 01/10] clk: fix incorrect usage of ENOSYS Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 02/10] clk: take the prepare lock out of clk_core_set_parent Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 03/10] clk: add clk_core_set_phase_nolock function Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 04/10] clk: rework calls to round and determine rate callbacks Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 05/10] clk: use round rate to bail out early in set_rate Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 06/10] clk: add clock protection mechanism to clk core Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 07/10] clk: cosmetic changes to clk_summary debugfs entry Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 08/10] clk: fix CLK_SET_RATE_GATE with clock rate protection Jerome Brunet
2017-09-24 20:00 ` [PATCH v4 09/10] clk: add clk_rate_exclusive api Jerome Brunet
2017-10-26 5:26 ` Michael Turquette [this message]
2017-10-31 17:29 ` Jerome Brunet
2017-10-31 17:32 ` Michael Turquette
2017-09-24 20:00 ` [PATCH v4 10/10] clk: fix set_rate_range when current rate is out of range Jerome Brunet
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