dtc: Enable and fix -Wpointer-arith warnings

This patch turns on the -Wpointer-arith option in the dtc Makefile,
and fixes the resulting warnings due to using (void *) in pointer
arithmetic.  While convenient, pointer arithmetic on void * is not
portable, so it's better that we avoid it, particularly in libfdt.

Also add necessary definition of uintptr_t needed by David Gibson's
changeset "dtc: Enable and fix -Wpointer-arith warnings" (the definition
comes from stdint.h, which u-boot doesn't have). -- gvb

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/libfdt/libfdt_internal.h b/libfdt/libfdt_internal.h
index f72e70d..2ba30db 100644
--- a/libfdt/libfdt_internal.h
+++ b/libfdt/libfdt_internal.h
@@ -72,7 +72,7 @@ int _fdt_node_end_offset(void *fdt, int nodeoffset);
 
 static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
 {
-	return fdt + fdt_off_dt_struct(fdt) + offset;
+	return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
 }
 
 static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
@@ -82,8 +82,8 @@ static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
 
 static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
 {
-	const struct fdt_reserve_entry *rsv_table =
-		fdt + fdt_off_mem_rsvmap(fdt);
+	const struct fdt_reserve_entry *rsv_table = (struct fdt_reserve_entry *)
+		((const char *)fdt + fdt_off_mem_rsvmap(fdt));
 
 	return rsv_table + n;
 }