linux-kernel - [PATCH 2/2] clk: versatile: clk-icst: Ensure clock names are unique

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Message-Id: <20211109164650.2233507-3-robh@kernel.org>
Date:   Tue,  9 Nov 2021 10:46:50 -0600
From:   Rob Herring <robh@...nel.org>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Guenter Roeck <linux@...ck-us.net>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: [PATCH 2/2] clk: versatile: clk-icst: Ensure clock names are unique

Commit 2d3de197a818 ("ARM: dts: arm: Update ICST clock nodes 'reg' and
node names") moved to using generic node names. That results in trying
to register multiple clocks with the same name. Fix this by including
the unit-address in the clock name.

Fixes: 2d3de197a818 ("ARM: dts: arm: Update ICST clock nodes 'reg' and node names")
Cc: stable@...r.kernel.org
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Stephen Boyd <sboyd@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-clk@...r.kernel.org
Signed-off-by: Rob Herring <robh@...nel.org>
---
This should be applied to stable to minimize DT ABI breakage.
---
 drivers/clk/versatile/clk-icst.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index 77fd0ecaf155..d52f976dc875 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -484,7 +484,7 @@ static void __init of_syscon_icst_setup(struct device_node *np)
 	struct device_node *parent;
 	struct regmap *map;
 	struct clk_icst_desc icst_desc;
-	const char *name = np->name;
+	const char *name;
 	const char *parent_name;
 	struct clk *regclk;
 	enum icst_control_type ctype;
@@ -533,15 +533,17 @@ static void __init of_syscon_icst_setup(struct device_node *np)
 		icst_desc.params = &icst525_apcp_cm_params;
 		ctype = ICST_INTEGRATOR_CP_CM_MEM;
 	} else {
-		pr_err("unknown ICST clock %s\n", name);
+		pr_err("unknown ICST clock %pOF\n", np);
 		return;
 	}
 
 	/* Parent clock name is not the same as node parent */
 	parent_name = of_clk_get_parent_name(np, 0);
+	name = kasprintf(GFP_KERNEL, "%pOFP", np);
 
 	regclk = icst_clk_setup(NULL, &icst_desc, name, parent_name, map, ctype);
 	if (IS_ERR(regclk)) {
+		kfree(name);
 		pr_err("error setting up syscon ICST clock %s\n", name);
 		return;
 	}
-- 
2.32.0