On 3/5/19 9:24 AM, Ray Jui wrote:
>
>
> On 3/5/2019 3:33 AM, 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-bcm/board_bcm281xx.c:43:2-8: ERROR: missing of_node_put;
>> acquired a node pointer with refcount incremented on line 35, but without a
>> corresponding object release within this function.
>>
>> Signed-off-by: Wen Yang <wen.yan...@zte.com.cn>
>> Reviewed-by: Florian Fainelli <f.faine...@gmail.com>
>> Cc: Florian Fainelli <f.faine...@gmail.com>
>> Cc: Ray Jui <r...@broadcom.com>
>> Cc: Scott Branden <sbran...@broadcom.com>
>> Cc: bcm-kernel-feedback-l...@broadcom.com
>> Cc: Russell King <li...@armlinux.org.uk>
>> Cc: linux-arm-ker...@lists.infradead.org
>> Cc: linux-kernel@vger.kernel.org
>> ---
>> v2->v1: add a missing space between "adding" and "missing"
>>
>> arch/arm/mach-bcm/board_bcm281xx.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm/mach-bcm/board_bcm281xx.c
>> b/arch/arm/mach-bcm/board_bcm281xx.c
>> index b81bb38..1238ac8 100644
>> --- a/arch/arm/mach-bcm/board_bcm281xx.c
>> +++ b/arch/arm/mach-bcm/board_bcm281xx.c
>> @@ -38,6 +38,7 @@ static void bcm281xx_restart(enum reboot_mode mode, const
>> char *cmd)
>> return;
>> }
>> base = of_iomap(np_wdog, 0);
>> + of_node_put(np_wdog);
>> if (!base) {
>> pr_emerg("Couldn't map brcm,kona-wdt\n");
>> return;
>>
>
> Change looks good to me. Thanks!
>
> Acked-by: Ray Jui <ray....@broadcom.com>
>
Squashed this patch and "[PATCH 1/4] ARM: brcmstb: fix a leaked
reference by adding missing of_node_put" into the same commit:
https://github.com/Broadcom/stblinux/commit/ff98f8f6083a7f317463f538e9a21822e1128657
thanks Wen!
--
Florian
