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. Suggested-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> Fixes: aade55c86033 ("device property: Add const qualifier to device_get_match_data() parameter") Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> --- drivers/base/property.c | 11 +++++++++-- include/linux/property.h | 3 ++- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/base/property.c b/drivers/base/property.c index 4d6278a84868..699f1b115e0a 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -17,13 +17,20 @@ #include <linux/property.h> #include <linux/phy.h> -struct fwnode_handle *dev_fwnode(const struct device *dev) +struct fwnode_handle *dev_fwnode(struct device *dev) { return IS_ENABLED(CONFIG_OF) && dev->of_node ? of_fwnode_handle(dev->of_node) : dev->fwnode; } EXPORT_SYMBOL_GPL(dev_fwnode); +const struct fwnode_handle *dev_fwnode_const(const struct device *dev) +{ + return IS_ENABLED(CONFIG_OF) && dev->of_node ? + of_fwnode_handle(dev->of_node) : dev->fwnode; +} +EXPORT_SYMBOL_GPL(dev_fwnode_const); + /** * device_property_present - check if a property of a device is present * @dev: Device whose property is being checked @@ -1202,7 +1209,7 @@ EXPORT_SYMBOL(fwnode_graph_parse_endpoint); const void *device_get_match_data(const struct device *dev) { - return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev); + return fwnode_call_ptr_op(dev_fwnode_const(dev), device_get_match_data, dev); } EXPORT_SYMBOL_GPL(device_get_match_data); diff --git a/include/linux/property.h b/include/linux/property.h index 117cc200c656..ae5d7f8eccf4 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -32,7 +32,8 @@ enum dev_dma_attr { DEV_DMA_COHERENT, }; -struct fwnode_handle *dev_fwnode(const struct device *dev); +struct fwnode_handle *dev_fwnode(struct device *dev); +const struct fwnode_handle *dev_fwnode_const(const struct device *dev); bool device_property_present(struct device *dev, const char *propname); int device_property_read_u8_array(struct device *dev, const char *propname, -- 2.35.1