[PATCH 5.10] ACPI: property: Constify stubs for CONFIG_ACPI=n case

[Nathan Chancellor <nathan@kernel.org>]

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

commit 5c1a72a0fbe1b02c3ce0537f85f92ea935e0beec upstream.

There is a few stubs that left untouched during constification of
the fwnode related APIs. Constify three more stubs here.

Fixes: 8b9d6802583a ("ACPI: Constify acpi_bus helper functions, switch to macros")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[ rjw: Subject edit ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
This resolves compiler warning/errors seen in 5.10.253.

GCC:

  drivers/base/property.c: In function 'device_dma_supported':
  drivers/base/property.c:896:55: warning: passing argument 1 of 'to_acpi_device_node' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    896 |         return acpi_dma_supported(to_acpi_device_node(fwnode));
        |                                                       ^~~~~~
  In file included from drivers/base/property.c:10:
  include/linux/acpi.h:756:77: note: expected 'struct fwnode_handle *' but argument is of type 'const struct fwnode_handle *'
    756 | static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
        |                                                       ~~~~~~~~~~~~~~~~~~~~~~^~~~~~
  drivers/base/property.c: In function 'device_get_dma_attr':
  drivers/base/property.c:911:62: warning: passing argument 1 of 'to_acpi_device_node' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    911 |                 attr = acpi_get_dma_attr(to_acpi_device_node(fwnode));
        |                                                              ^~~~~~
  include/linux/acpi.h:756:77: note: expected 'struct fwnode_handle *' but argument is of type 'const struct fwnode_handle *'
    756 | static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
        |                                                       ~~~~~~~~~~~~~~~~~~~~~~^~~~~~

Clang:

  drivers/base/property.c:896:48: error: passing 'const struct fwnode_handle *' to parameter of type 'struct fwnode_handle *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
    896 |         return acpi_dma_supported(to_acpi_device_node(fwnode));
        |                                                       ^~~~~~
  include/linux/acpi.h:756:77: note: passing argument to parameter 'fwnode' here
    756 | static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
        |                                                                             ^
  drivers/base/property.c:911:48: error: passing 'const struct fwnode_handle *' to parameter of type 'struct fwnode_handle *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
    911 |                 attr = acpi_get_dma_attr(to_acpi_device_node(fwnode));
        |                                                              ^~~~~~
  include/linux/acpi.h:756:77: note: passing argument to parameter 'fwnode' here
    756 | static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
        |                                                                             ^
  2 errors generated.

  https://github.com/ClangBuiltLinux/continuous-integration2/actions/runs/24605516423
---
 include/linux/acpi.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 9c184dbceba4..c5b51d8dcbe1 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -753,7 +753,7 @@ static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)
 	return false;
 }
 
-static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
+static inline struct acpi_device *to_acpi_device_node(const struct fwnode_handle *fwnode)
 {
 	return NULL;
 }
@@ -763,12 +763,12 @@ static inline bool is_acpi_data_node(struct fwnode_handle *fwnode)
 	return false;
 }
 
-static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)
+static inline struct acpi_data_node *to_acpi_data_node(const struct fwnode_handle *fwnode)
 {
 	return NULL;
 }
 
-static inline bool acpi_data_node_match(struct fwnode_handle *fwnode,
+static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
 					const char *name)
 {
 	return false;

base-commit: 49e5d20074c20b20773c6dc0f8dce0635591093b
-- 
2.53.0