dtc: Enable and fix -Wcast-qual warnings
Enabling -Wcast-qual warnings in dtc shows up a number of places where
we are incorrectly discarding a const qualification. There are also
some places where we are intentionally discarding the 'const', and we
need an ugly cast through uintptr_t to suppress the warning. However,
most of these are pretty well isolated with the *_w() functions. So
in the interests of maximum safety with const qualifications, this
patch enables the warnings and fixes the existing complaints.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
diff --git a/libfdt/libfdt_internal.h b/libfdt/libfdt_internal.h
index 2ba30db..549e345 100644
--- a/libfdt/libfdt_internal.h
+++ b/libfdt/libfdt_internal.h
@@ -77,19 +77,20 @@
static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
{
- return (void *)_fdt_offset_ptr(fdt, offset);
+ return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
}
static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
{
- const struct fdt_reserve_entry *rsv_table = (struct fdt_reserve_entry *)
+ const struct fdt_reserve_entry *rsv_table =
+ (const struct fdt_reserve_entry *)
((const char *)fdt + fdt_off_mem_rsvmap(fdt));
return rsv_table + n;
}
static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
{
- return (void *)_fdt_mem_rsv(fdt, n);
+ return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
}
#define SW_MAGIC (~FDT_MAGIC)