powerpc: Const-qualify Device Node Argument to DCR Resource Extent API

Add const qualifier to device_node argument for
dcr_resource_{start,len} as of_get_property also const-qualifies this
argument.

Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/powerpc/sysdev/dcr.c b/arch/powerpc/sysdev/dcr.c
index a8ba9983dd5a..bb44aa9fd470 100644
--- a/arch/powerpc/sysdev/dcr.c
+++ b/arch/powerpc/sysdev/dcr.c
@@ -124,7 +124,8 @@ EXPORT_SYMBOL_GPL(dcr_write_generic);
 
 #endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */
 
-unsigned int dcr_resource_start(struct device_node *np, unsigned int index)
+unsigned int dcr_resource_start(const struct device_node *np,
+                                unsigned int index)
 {
         unsigned int ds;
         const u32 *dr = of_get_property(np, "dcr-reg", &ds);
@@ -136,7 +137,7 @@ unsigned int dcr_resource_start(struct device_node *np, unsigned int index)
 }
 EXPORT_SYMBOL_GPL(dcr_resource_start);
 
-unsigned int dcr_resource_len(struct device_node *np, unsigned int index)
+unsigned int dcr_resource_len(const struct device_node *np, unsigned int index)
 {
         unsigned int ds;
         const u32 *dr = of_get_property(np, "dcr-reg", &ds);