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mfd: syscon: Allow property as NULL in syscon_regmap_lookup_by_phandle

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If we pass syscon device node itself as first parameter to this function
there is no need to parse and find syscon device node. So by allowing
"property" parameter as NULL allow syscon_regmap_lookup_by_phandle to
consider passed argument "np" itself as a syscon device node "syscon_np".
This will help us in avoiding addition of "syscon" property in a device node
which points back to same device node in device tree.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Pankaj Dubey 2014-04-30 11:14:26 +09:00 • committed by Lee Jones
parent 3e87933a68
commit 45330bb434
1 changed files with 5 additions and 1 deletions

6
drivers/mfd/syscon.c
View file

@ -94,7 +94,11 @@ struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np,
struct device_node *syscon_np;
struct regmap *regmap;
syscon_np = of_parse_phandle(np, property, 0);
if (property)
syscon_np = of_parse_phandle(np, property, 0);
else
syscon_np = np;
if (!syscon_np)
return ERR_PTR(-ENODEV);