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From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Chen-Yu Tsai <wens@csie.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Heiko Stuebner <heiko@sntech.de>,
	Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-gpio@vger.kernel.org, linux-rockchip@lists.infradead.org,
	linux-tegra@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH v3 4/5] soc/tegra: pmc: Use of_clk_get_parent_count() instead of open coding
Date: Wed, 18 Apr 2018 16:50:04 +0200	[thread overview]
Message-ID: <1524063005-1716-5-git-send-email-geert+renesas@glider.be> (raw)
In-Reply-To: <1524063005-1716-1-git-send-email-geert+renesas@glider.be>

As of_clk_get_parent_count() returns zero on failure, while
of_count_phandle_with_args() might return a negative error code, this
also fixes the issue of possibly using a very big number in the
allocation below.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
---
This depends on "[PATCH v3 1/5] clk: Extract OF clock helpers in
<linux/of_clk.h>".

v3:
  - Add Acked-by,

v2:
  - of_clk_get_parent_count() was moved to <linux/of_clk.h>.
---
 drivers/soc/tegra/pmc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index d9fcdb592b3966a5..d8cb48a4b8eb1b78 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -31,6 +31,7 @@
 #include <linux/iopoll.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_clk.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
@@ -725,7 +726,7 @@ static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
 	unsigned int i, count;
 	int err;
 
-	count = of_count_phandle_with_args(np, "clocks", "#clock-cells");
+	count = of_clk_get_parent_count(np);
 	if (count == 0)
 		return -ENODEV;
 
-- 
2.7.4

  parent reply	other threads:[~2018-04-18 14:50 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-18 14:50 [PATCH v3 0/5] " Geert Uytterhoeven
2018-04-18 14:50 ` [PATCH v3 1/5] clk: Extract OF clock helpers in <linux/of_clk.h> Geert Uytterhoeven
2018-04-19 22:25   ` Stephen Boyd
2018-04-20  6:28     ` Geert Uytterhoeven
2018-04-24 15:44       ` Rob Herring
2018-05-02 15:38   ` Stephen Boyd
2018-04-18 14:50 ` [PATCH v3 2/5] ARM: timer-sp: Use of_clk_get_parent_count() instead of open coding Geert Uytterhoeven
2018-05-02 15:38   ` Stephen Boyd
2018-04-18 14:50 ` [PATCH v3 3/5] soc: rockchip: power-domain: " Geert Uytterhoeven
2018-04-30 13:41   ` Daniel Lezcano
2018-05-02 15:38   ` Stephen Boyd
2018-04-18 14:50 ` Geert Uytterhoeven [this message]
2018-04-30 13:44   ` [PATCH v3 4/5] soc/tegra: pmc: " Daniel Lezcano
2018-05-02 15:38   ` Stephen Boyd
2018-04-18 14:50 ` [PATCH v3 5/5] pinctrl: sunxi: " Geert Uytterhoeven
2018-04-26 11:57   ` Linus Walleij
2018-04-30 13:46   ` Daniel Lezcano
2018-05-02 15:38   ` Stephen Boyd

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