On 23. 10. 18. 15:16, Sascha Hauer wrote: > As a matter of fact the regmap_pmu already is mandatory because > it is used unconditionally in the driver. Bail out gracefully in > probe() rather than crashing later. > > Fixes: b9d1262bca0af ("PM / devfreq: event: support rockchip dfi controller") > Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> > --- > > Notes: > Changes since v4: > - move to beginning of the series to make it easier to backport to stable > - Add a Fixes: tag > - add missing of_node_put() > > drivers/devfreq/event/rockchip-dfi.c | 15 ++++++++------- > 1 file changed, 8 insertions(+), 7 deletions(-) > > diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c > index 39ac069cabc75..74893c06aa087 100644 > --- a/drivers/devfreq/event/rockchip-dfi.c > +++ b/drivers/devfreq/event/rockchip-dfi.c > @@ -193,14 +193,15 @@ static int rockchip_dfi_probe(struct platform_device *pdev) > return dev_err_probe(dev, PTR_ERR(data->clk), > "Cannot get the clk pclk_ddr_mon\n"); > > - /* try to find the optional reference to the pmu syscon */ > node = of_parse_phandle(np, "rockchip,pmu", 0); > - if (node) { > - data->regmap_pmu = syscon_node_to_regmap(node); > - of_node_put(node); > - if (IS_ERR(data->regmap_pmu)) > - return PTR_ERR(data->regmap_pmu); > - } > + if (!node) > + return dev_err_probe(&pdev->dev, -ENODEV, "Can't find pmu_grf registers\n"); > + > + data->regmap_pmu = syscon_node_to_regmap(node); > + of_node_put(node); > + if (IS_ERR(data->regmap_pmu)) > + return PTR_ERR(data->regmap_pmu); > + > data->dev = dev; > > desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); Already applied it on v7. -- Best Regards, Samsung Electronics Chanwoo Choi