Hi Yangtao, Thank you for the patch. On 11/21/2018 01:31 PM, Yangtao Li wrote: > of_find_node_by_path() acquires a reference to the node returned by > it and that reference needs to be dropped by its caller.bl_idle_init() > doesn't do that, so fix it. s/bl_idle_init/powernv_led_probe/ I suppose that you adopted the commit message from a fix for drivers/cpuidle/cpuidle-big_little.c. > Signed-off-by: Yangtao Li <tiny.windzz@xxxxxxxxx> > --- > drivers/leds/leds-powernv.c | 12 +++++++++--- > 1 file changed, 9 insertions(+), 3 deletions(-) > > diff --git a/drivers/leds/leds-powernv.c b/drivers/leds/leds-powernv.c > index b1adbd70ce2e..0b1540029034 100644 > --- a/drivers/leds/leds-powernv.c > +++ b/drivers/leds/leds-powernv.c > @@ -285,6 +285,7 @@ static int powernv_led_probe(struct platform_device *pdev) > struct device_node *led_node; > struct powernv_led_common *powernv_led_common; > struct device *dev = &pdev->dev; > + int rc; > > led_node = of_find_node_by_path("/ibm,opal/leds"); > if (!led_node) { > @@ -295,15 +296,20 @@ static int powernv_led_probe(struct platform_device *pdev) > > powernv_led_common = devm_kzalloc(dev, sizeof(*powernv_led_common), > GFP_KERNEL); > - if (!powernv_led_common) > - return -ENOMEM; > + if (!powernv_led_common){ missing space: s/){/) {/ > + rc = -ENOMEM; > + goto out; > + } > > mutex_init(&powernv_led_common->lock); > powernv_led_common->max_led_type = cpu_to_be64(OPAL_SLOT_LED_TYPE_MAX); > > platform_set_drvdata(pdev, powernv_led_common); > > - return powernv_led_classdev(pdev, led_node, powernv_led_common); > + rc = powernv_led_classdev(pdev, led_node, powernv_led_common); > +out: > + of_node_put(led_node); > + return rc; > } > > /* Platform driver remove */ > I've fixed those trivial problems and applied the patch to the for-next branch of linux-leds.git. -- Best regards, Jacek Anaszewski