driver core: make struct bus_type.uevent() take a const *

The uevent() callback in struct bus_type should not be modifying the
device that is passed into it, so mark it as a const * and propagate the
function signature changes out into all relevant subsystems that use
this callback.

Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230111113018.459199-16-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/nvdimm/bus.c

@@ -28,7 +28,7 @@ static int nvdimm_bus_major;
 struct class *nd_class;
 static DEFINE_IDA(nd_ida);
 
-static int to_nd_device_type(struct device *dev)
+static int to_nd_device_type(const struct device *dev)
 {
 	if (is_nvdimm(dev))
 		return ND_DEVICE_DIMM;
@@ -42,7 +42,7 @@ static int to_nd_device_type(struct device *dev)
 	return 0;
 }
 
-static int nvdimm_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int nvdimm_bus_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
 	return add_uevent_var(env, "MODALIAS=" ND_DEVICE_MODALIAS_FMT,
 			to_nd_device_type(dev));

drivers/nvdimm/dax_devs.c

@@ -38,7 +38,7 @@ static const struct device_type nd_dax_device_type = {
 	.groups = nd_pfn_attribute_groups,
 };
 
-bool is_nd_dax(struct device *dev)
+bool is_nd_dax(const struct device *dev)
 {
 	return dev ? dev->type == &nd_dax_device_type : false;
 }

drivers/nvdimm/dimm_devs.c

@@ -572,7 +572,7 @@ static const struct device_type nvdimm_device_type = {
 	.groups = nvdimm_attribute_groups,
 };
 
-bool is_nvdimm(struct device *dev)
+bool is_nvdimm(const struct device *dev)
 {
 	return dev->type == &nvdimm_device_type;
 }

drivers/nvdimm/nd-core.h

@@ -82,14 +82,14 @@ static inline void nvdimm_security_overwrite_query(struct work_struct *work)
 }
 #endif
 
-bool is_nvdimm(struct device *dev);
-bool is_nd_pmem(struct device *dev);
-bool is_nd_volatile(struct device *dev);
-static inline bool is_nd_region(struct device *dev)
+bool is_nvdimm(const struct device *dev);
+bool is_nd_pmem(const struct device *dev);
+bool is_nd_volatile(const struct device *dev);
+static inline bool is_nd_region(const struct device *dev)
 {
 	return is_nd_pmem(dev) || is_nd_volatile(dev);
 }
-static inline bool is_memory(struct device *dev)
+static inline bool is_memory(const struct device *dev)
 {
 	return is_nd_pmem(dev) || is_nd_volatile(dev);
 }

drivers/nvdimm/nd.h

@@ -599,7 +599,7 @@ static inline int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
 struct nd_dax *to_nd_dax(struct device *dev);
 #if IS_ENABLED(CONFIG_NVDIMM_DAX)
 int nd_dax_probe(struct device *dev, struct nd_namespace_common *ndns);
-bool is_nd_dax(struct device *dev);
+bool is_nd_dax(const struct device *dev);
 struct device *nd_dax_create(struct nd_region *nd_region);
 #else
 static inline int nd_dax_probe(struct device *dev,
@@ -608,7 +608,7 @@ static inline int nd_dax_probe(struct device *dev,
 	return -ENODEV;
 }
 
-static inline bool is_nd_dax(struct device *dev)
+static inline bool is_nd_dax(const struct device *dev)
 {
 	return false;
 }

drivers/nvdimm/region_devs.c

@@ -839,12 +839,12 @@ static const struct device_type nd_volatile_device_type = {
 	.groups = nd_region_attribute_groups,
 };
 
-bool is_nd_pmem(struct device *dev)
+bool is_nd_pmem(const struct device *dev)
 {
 	return dev ? dev->type == &nd_pmem_device_type : false;
 }
 
-bool is_nd_volatile(struct device *dev)
+bool is_nd_volatile(const struct device *dev)
 {
 	return dev ? dev->type == &nd_volatile_device_type : false;
 }