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dm: core: Add device checking to syscon_get_regmap()

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This function can only handle a syscon device. It is possible that someone
will make a mistake, so add a check for this.

Also we should return -ENODEV when a device cannot be found, so update the
syscon_get_regmap_by_driver_data() to follow this convention.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-07-06 12:54:38 -06:00
parent 85aeda4a62
commit 9f4629be8a
1 changed files with 5 additions and 2 deletions
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7
drivers/core/syscon-uclass.c
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@ -17,8 +17,11 @@
struct regmap *syscon_get_regmap(struct udevice *dev) struct regmap *syscon_get_regmap(struct udevice *dev)
{ {
struct syscon_uc_info *priv = dev_get_uclass_priv(dev); struct syscon_uc_info *priv;
if (device_get_uclass_id(dev) != UCLASS_SYSCON)
return ERR_PTR(-ENOEXEC);
priv = dev_get_uclass_priv(dev);
return priv->regmap; return priv->regmap;
} }
@ -52,7 +55,7 @@ struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data)
} }
} }
return ERR_PTR(-ENOENT); return ERR_PTR(-ENODEV);
} }
void *syscon_get_first_range(ulong driver_data) void *syscon_get_first_range(ulong driver_data)