[PATCH v3 2/2] powerpc/powermac: constify device_node in of_irq_parse_oldworld()

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The of_irq_parse_oldworld() does not modify passed device_node so make
it a pointer to const for safety.  Drop the extern while modifying the
line.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>

---

Changes since v1:
1. Drop extern.
---
 arch/powerpc/platforms/powermac/pic.c | 2 +-
 include/linux/of_irq.h                | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 4921bccf0376..af5ca1f41bb1 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -384,7 +384,7 @@ static void __init pmac_pic_probe_oldstyle(void)
 #endif
 }
 
-int of_irq_parse_oldworld(struct device_node *device, int index,
+int of_irq_parse_oldworld(const struct device_node *device, int index,
 			struct of_phandle_args *out_irq)
 {
 	const u32 *ints = NULL;
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index aaf219bd0354..83fccd0c9bba 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -20,12 +20,12 @@ typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
 #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
 extern unsigned int of_irq_workarounds;
 extern struct device_node *of_irq_dflt_pic;
-extern int of_irq_parse_oldworld(struct device_node *device, int index,
-			       struct of_phandle_args *out_irq);
+int of_irq_parse_oldworld(const struct device_node *device, int index,
+			  struct of_phandle_args *out_irq);
 #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
 #define of_irq_workarounds (0)
 #define of_irq_dflt_pic (NULL)
-static inline int of_irq_parse_oldworld(struct device_node *device, int index,
+static inline int of_irq_parse_oldworld(const struct device_node *device, int index,
 				      struct of_phandle_args *out_irq)
 {
 	return -EINVAL;
-- 
2.30.2




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