[V3] ARM: imx: Add missing of_node_put()

Commit Message

Anson Huang Feb. 13, 2020, 8:35 a.m. UTC

After finishing using device node got from of_find_compatible_node(),
of_node_put() needs to be called.

Signed-off-by: Anson Huang <[e-mail]>
---
Changes since V2:
	- introduce src_node in anatop.c for second usage of of_find_compatible_node
	  to make of_node_put() more clear for reader.
---
 arch/arm/mach-imx/anatop.c     | 6 ++++--
 arch/arm/mach-imx/gpc.c        | 1 +
 arch/arm/mach-imx/platsmp.c    | 1 +
 arch/arm/mach-imx/pm-imx6.c    | 2 ++
 arch/arm/mach-imx/pm-imx7ulp.c | 1 +
 5 files changed, 9 insertions(+), 2 deletions(-)

Comments

Shawn Guo Feb. 18, 2020, 9:46 a.m. UTC | #1

On Thu, Feb 13, 2020 at 04:35:33PM +0800, Anson Huang wrote:
> After finishing using device node got from of_find_compatible_node(),
> of_node_put() needs to be called.
> 
> Signed-off-by: Anson Huang <[e-mail]>

Applied, thanks.

Patch

diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c
index 8fb68c0..ea4a596 100644
--- a/arch/arm/mach-imx/anatop.c
+++ b/arch/arm/mach-imx/anatop.c
@@ -94,7 +94,7 @@  void imx_anatop_post_resume(void)
 
 void __init imx_init_revision_from_anatop(void)
 {
-	struct device_node *np;
+	struct device_node *np, *src_np;
 	void __iomem *anatop_base;
 	unsigned int revision;
 	u32 digprog;
@@ -135,9 +135,10 @@  void __init imx_init_revision_from_anatop(void)
 			void __iomem *src_base;
 			u32 sbmr2;
 
-			np = of_find_compatible_node(NULL, NULL,
+			src_np = of_find_compatible_node(NULL, NULL,
 						     "fsl,imx6ul-src");
 			src_base = of_iomap(np, 0);
+			of_node_put(src_np);
 			WARN_ON(!src_base);
 			sbmr2 = readl_relaxed(src_base + SRC_SBMR2);
 			iounmap(src_base);
@@ -149,6 +150,7 @@  void __init imx_init_revision_from_anatop(void)
 			}
 		}
 	}
+	of_node_put(np);
 
 	mxc_set_cpu_type(digprog >> 16 & 0xff);
 	imx_set_soc_revision(revision);
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index b5b557f..07f1972 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c
@@ -282,4 +282,5 @@  void __init imx_gpc_check_dt(void)
 		/* map GPC, so that at least CPUidle and WARs keep working */
 		gpc_base = of_iomap(np, 0);
 	}
+	of_node_put(np);
 }
diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c
index 2aa2692..cf4e933 100644
--- a/arch/arm/mach-imx/platsmp.c
+++ b/arch/arm/mach-imx/platsmp.c
@@ -109,6 +109,7 @@  static void __init ls1021a_smp_prepare_cpus(unsigned int max_cpus)
 
 	np = of_find_compatible_node(NULL, NULL, "fsl,ls1021a-dcfg");
 	dcfg_base = of_iomap(np, 0);
+	of_node_put(np);
 	BUG_ON(!dcfg_base);
 
 	paddr = __pa_symbol(secondary_startup);
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c
index 1c0ecad..dd34dff 100644
--- a/arch/arm/mach-imx/pm-imx6.c
+++ b/arch/arm/mach-imx/pm-imx6.c
@@ -655,6 +655,8 @@  void __init imx6_pm_ccm_init(const char *ccm_compat)
 
 	if (of_property_read_bool(np, "fsl,pmic-stby-poweroff"))
 		imx6_pm_stby_poweroff_probe();
+
+	of_node_put(np);
 }
 
 void __init imx6q_pm_init(void)
diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c
index 7b2f738..2e756d8 100644
--- a/arch/arm/mach-imx/pm-imx7ulp.c
+++ b/arch/arm/mach-imx/pm-imx7ulp.c
@@ -62,6 +62,7 @@  void __init imx7ulp_pm_init(void)
 
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1");
 	smc1_base = of_iomap(np, 0);
+	of_node_put(np);
 	WARN_ON(!smc1_base);
 
 	imx7ulp_set_lpm(ULP_PM_RUN);