[PATCH 6/6] soc: rockchip: power-domain: check the existing of regmap

[Shawn Lin]

Check return value of syscon_node_to_regmap for
rockchip_pm_domain_probe. If err value is returned, probe
procedure should abort.

Signed-off-by: Shawn Lin <shawn....@rock-chips.com>
---

 drivers/soc/rockchip/pm_domains.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/soc/rockchip/pm_domains.c 
b/drivers/soc/rockchip/pm_domains.c
index 534c589..3c4a44d 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -402,6 +402,10 @@ static int rockchip_pm_domain_probe(struct platform_device 
*pdev)
        }
 
        pmu->regmap = syscon_node_to_regmap(parent->of_node);
+       if (IS_ERR(pmu->regmap)) {
+               dev_err(dev, "no regmap available\n");
+               return -ENODEV;
+       }
 
        /*
         * Configure power up and down transition delays for CORE
-- 
2.3.7