diff mbox series

[v2,08/15] ARM: shmobile: fix a leaked reference by adding missing of_node_put

Message ID 1551785646-46173-8-git-send-email-wen.yang99@zte.com.cn (mailing list archive)
State New, archived
Headers show
Series [v2,01/15] ARM: actions: fix a leaked reference by adding missing of_node_put | expand

Commit Message

Wen Yang March 5, 2019, 11:33 a.m. UTC
The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./arch/arm/mach-shmobile/pm-rcar-gen2.c:77:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
./arch/arm/mach-shmobile/pm-rcar-gen2.c:85:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
./arch/arm/mach-shmobile/pm-rcar-gen2.c:90:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
v2->v1: add a missing space between "adding" and "missing"

 arch/arm/mach-shmobile/pm-rcar-gen2.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Simon Horman March 8, 2019, 12:07 p.m. UTC | #1
On Tue, Mar 05, 2019 at 07:33:59PM +0800, Wen Yang wrote:
> The call to of_get_next_child returns a node pointer with refcount
> incremented thus it must be explicitly decremented after the last
> usage.
> 
> Detected by coccinelle with the following warnings:
> ./arch/arm/mach-shmobile/pm-rcar-gen2.c:77:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
> ./arch/arm/mach-shmobile/pm-rcar-gen2.c:85:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
> ./arch/arm/mach-shmobile/pm-rcar-gen2.c:90:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 66, but without a corresponding object release within this function.
> 
> Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Cc: Simon Horman <horms@verge.net.au>
> Cc: Magnus Damm <magnus.damm@gmail.com>
> Cc: Russell King <linux@armlinux.org.uk>
> Cc: linux-renesas-soc@vger.kernel.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> ---
> v2->v1: add a missing space between "adding" and "missing"

Thanks, I have this applied for inclusion in v5.2.

>  arch/arm/mach-shmobile/pm-rcar-gen2.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c
> index 8c2a205..e84599d 100644
> --- a/arch/arm/mach-shmobile/pm-rcar-gen2.c
> +++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c
> @@ -72,6 +72,7 @@ void __init rcar_gen2_pm_init(void)
>  	}
>  
>  	error = of_address_to_resource(np, 0, &res);
> +	of_node_put(np);
>  	if (error) {
>  		pr_err("Failed to get smp-sram address: %d\n", error);
>  		return;
> -- 
> 2.9.5
>
diff mbox series

Patch

diff --git a/arch/arm/mach-shmobile/pm-rcar-gen2.c b/arch/arm/mach-shmobile/pm-rcar-gen2.c
index 8c2a205..e84599d 100644
--- a/arch/arm/mach-shmobile/pm-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/pm-rcar-gen2.c
@@ -72,6 +72,7 @@  void __init rcar_gen2_pm_init(void)
 	}
 
 	error = of_address_to_resource(np, 0, &res);
+	of_node_put(np);
 	if (error) {
 		pr_err("Failed to get smp-sram address: %d\n", error);
 		return;