diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-10-04 12:21:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-22 13:42:04 +0200 |
| commit | b295d484b97081feba72b071ffcb72fb4638ccfd (patch) | |
| tree | e3e71a32739c4ab13674a7373235d84ba58e0002 /include/linux/property.h | |
| parent | 3d24903a6dd27ab817b4c6c24bee245ff06f7c8e (diff) | |
| download | linux-b295d484b97081feba72b071ffcb72fb4638ccfd.tar.bz2 | |
device property: Allow const parameter to dev_fwnode()
It's not fully correct to take a const parameter pointer to a struct
and return a non-const pointer to a member of that struct.
Instead, introduce a const version of the dev_fwnode() API which takes
and returns const pointers and use it where it's applicable.
With this, convert dev_fwnode() to be a macro wrapper on top of const
and non-const APIs that chooses one based on the type.
Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Fixes: aade55c86033 ("device property: Add const qualifier to device_get_match_data() parameter")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20221004092129.19412-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/property.h')
| -rw-r--r-- | include/linux/property.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/property.h b/include/linux/property.h index 117cc200c656..587b5b666b5b 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -32,7 +32,12 @@ enum dev_dma_attr { DEV_DMA_COHERENT, }; -struct fwnode_handle *dev_fwnode(const struct device *dev); +const struct fwnode_handle *__dev_fwnode_const(const struct device *dev); +struct fwnode_handle *__dev_fwnode(struct device *dev); +#define dev_fwnode(dev) \ + _Generic((dev), \ + const struct device *: __dev_fwnode_const, \ + struct device *: __dev_fwnode)(dev) bool device_property_present(struct device *dev, const char *propname); int device_property_read_u8_array(struct device *dev, const char *propname, |