of: consolidate linker section OF match table declarations

We now have several OF match tables using linker sections that are
nearly the same definition. The only variation is the callback function
prototype. Create a common define for creating linker section OF match
table entries which each table declaration can use.

Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>

6 files changed, 32 insertions, 38 deletions

diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
index ae2e4278c42a..0093a8e49e14 100644
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-of.c
@@ -27,7 +27,7 @@ void __init clocksource_of_init(void)
 {
         struct device_node *np;
         const struct of_device_id *match;
-        clocksource_of_init_fn init_func;
+        of_init_fn_1 init_func;
         unsigned clocksources = 0;
 
         for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
diff --git a/drivers/irqchip/irqchip.h b/drivers/irqchip/irqchip.h
index e445ba2d6add..0f6486d4f1b0 100644
--- a/drivers/irqchip/irqchip.h
+++ b/drivers/irqchip/irqchip.h
@@ -11,6 +11,8 @@
 #ifndef _IRQCHIP_H
 #define _IRQCHIP_H
 
+#include <linux/of.h>
+
 /*
  * This macro must be used by the different irqchip drivers to declare
  * the association between their DT compatible string and their
@@ -21,9 +23,6 @@
  * @compstr: compatible string of the irqchip driver
  * @fn: initialization function
  */
-#define IRQCHIP_DECLARE(name,compstr,fn)                                \
-        static const struct of_device_id irqchip_of_match_##name        \
-        __used __section(__irqchip_of_table)                            \
-        = { .compatible = compstr, .data = fn }
+#define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
 
 #endif
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 511917416fb0..a6e4008a0bf7 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -498,10 +498,7 @@ struct clk_onecell_data {
 
 extern struct of_device_id __clk_of_table;
 
-#define CLK_OF_DECLARE(name, compat, fn)                        \
-        static const struct of_device_id __clk_of_table_##name  \
-                __used __section(__clk_of_table)                \
-                = { .compatible = compat, .data = fn };
+#define CLK_OF_DECLARE(name, compat, fn) OF_DECLARE_1(clk, name, compat, fn)
 
 #ifdef CONFIG_OF
 int of_clk_add_provider(struct device_node *np,
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 67301a405712..a16b497d5159 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -339,23 +339,13 @@ extern int clocksource_mmio_init(void __iomem *, const char *,
 
 extern int clocksource_i8253_init(void);
 
-struct device_node;
-typedef void(*clocksource_of_init_fn)(struct device_node *);
+#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
+        OF_DECLARE_1(clksrc, name, compat, fn)
+
 #ifdef CONFIG_CLKSRC_OF
 extern void clocksource_of_init(void);
-
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn)                        \
-        static const struct of_device_id __clksrc_of_table_##name       \
-                __used __section(__clksrc_of_table)                     \
-                 = { .compatible = compat,                              \
-                     .data = (fn == (clocksource_of_init_fn)NULL) ? fn : fn }
 #else
 static inline void clocksource_of_init(void) {}
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn)                        \
-        static const struct of_device_id __clksrc_of_table_##name       \
-                __attribute__((unused))                                 \
-                 = { .compatible = compat,                              \
-                     .data = (fn == (clocksource_of_init_fn)NULL) ? fn : fn }
 #endif
 
 #endif /* _LINUX_CLOCKSOURCE_H */
diff --git a/include/linux/of.h b/include/linux/of.h
index 3bad8d106e0e..bf65335b4d05 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -757,4 +757,26 @@ static inline int of_get_available_child_count(const struct device_node *np)
         return num;
 }
 
+#ifdef CONFIG_OF
+#define _OF_DECLARE(table, name, compat, fn, fn_type)                   \
+        static const struct of_device_id __of_table_##name              \
+                __used __section(__##table##_of_table)                  \
+                 = { .compatible = compat,                              \
+                     .data = (fn == (fn_type)NULL) ? fn : fn  }
+#else
+#define _OF_DECLARE(table, name, compat, fn, fn_type)                                   \
+        static const struct of_device_id __of_table_##name              \
+                __attribute__((unused))                                 \
+                 = { .compatible = compat,                              \
+                     .data = (fn == (fn_type)NULL) ? fn : fn }
+#endif
+
+typedef int (*of_init_fn_2)(struct device_node *, struct device_node *);
+typedef void (*of_init_fn_1)(struct device_node *);
+
+#define OF_DECLARE_1(table, name, compat, fn) \
+                _OF_DECLARE(table, name, compat, fn, of_init_fn_1)
+#define OF_DECLARE_2(table, name, compat, fn) \
+                _OF_DECLARE(table, name, compat, fn, of_init_fn_2)
+
 #endif /* _LINUX_OF_H */
diff --git a/include/linux/of_reserved_mem.h b/include/linux/of_reserved_mem.h
index 4c81b84e95ff..4669ddfdd5af 100644
--- a/include/linux/of_reserved_mem.h
+++ b/include/linux/of_reserved_mem.h
@@ -23,31 +23,17 @@ struct reserved_mem_ops {
 
 typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem);
 
+#define RESERVEDMEM_OF_DECLARE(name, compat, init)                      \
+        _OF_DECLARE(reservedmem, name, compat, init, reservedmem_of_init_fn)
 
 #ifdef CONFIG_OF_RESERVED_MEM
 void fdt_init_reserved_mem(void);
 void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
                                phys_addr_t base, phys_addr_t size);
-
-#define RESERVEDMEM_OF_DECLARE(name, compat, init)                      \
-        static const struct of_device_id __reservedmem_of_table_##name  \
-                __used __section(__reservedmem_of_table)                \
-                 = { .compatible = compat,                              \
-                     .data = (init == (reservedmem_of_init_fn)NULL) ?   \
-                                init : init }
-
 #else
 static inline void fdt_init_reserved_mem(void) { }
 static inline void fdt_reserved_mem_save_node(unsigned long node,
                 const char *uname, phys_addr_t base, phys_addr_t size) { }
-
-#define RESERVEDMEM_OF_DECLARE(name, compat, init)                      \
-        static const struct of_device_id __reservedmem_of_table_##name  \
-                __attribute__((unused))                                 \
-                 = { .compatible = compat,                              \
-                     .data = (init == (reservedmem_of_init_fn)NULL) ?   \
-                                init : init }
-
 #endif
 
 #endif /* __OF_RESERVED_MEM_H */