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From: "Rob Herring (Arm)" <robh@kernel.org>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] clk: at91: Use of_property_count_u32_elems() to get property length
Date: Wed, 31 Jul 2024 14:14:02 -0600	[thread overview]
Message-ID: <20240731201407.1838385-7-robh@kernel.org> (raw)

Replace of_get_property() with the type specific
of_property_count_u32_elems() to get the property length.

This is part of a larger effort to remove callers of of_get_property()
and similar functions. of_get_property() leaks the DT property data
pointer which is a problem for dynamically allocated nodes which may
be freed.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
 drivers/clk/at91/dt-compat.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/at91/dt-compat.c b/drivers/clk/at91/dt-compat.c
index a32dc2111b90..f5a5f9ba7634 100644
--- a/drivers/clk/at91/dt-compat.c
+++ b/drivers/clk/at91/dt-compat.c
@@ -563,9 +563,10 @@ of_at91_clk_pll_get_characteristics(struct device_node *np)
 	if (num_cells < 2 || num_cells > 4)
 		return NULL;
 
-	if (!of_get_property(np, "atmel,pll-clk-output-ranges", &tmp))
+	num_output = of_property_count_u32_elems(np, "atmel,pll-clk-output-ranges");
+	if (num_output <= 0)
 		return NULL;
-	num_output = tmp / (sizeof(u32) * num_cells);
+	num_output /= num_cells;
 
 	characteristics = kzalloc(sizeof(*characteristics), GFP_KERNEL);
 	if (!characteristics)
-- 
2.43.0


             reply	other threads:[~2024-07-31 20:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-31 20:14 Rob Herring (Arm) [this message]
2024-08-02 23:53 ` [PATCH] clk: at91: Use of_property_count_u32_elems() to get property length Stephen Boyd

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