From: David Gibson david@gibson.dropbear.id.au
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 Acked-by: Gerald Van Baren vanbaren@cideas.com --- include/libfdt.h | 8 ++++---- libfdt/fdt_ro.c | 2 +- libfdt/fdt_rw.c | 4 ++-- libfdt/libfdt_internal.h | 7 ++++--- 4 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/include/libfdt.h b/include/libfdt.h index 2a2b23d..7e043ef 100644 --- a/include/libfdt.h +++ b/include/libfdt.h @@ -125,7 +125,7 @@ const void *fdt_offset_ptr(const void *fdt, int offset, int checklen); static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen) { - return (void *)fdt_offset_ptr(fdt, offset, checklen); + return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen); }
uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset); @@ -375,8 +375,8 @@ static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset, const char *name, int *lenp) { - return (struct fdt_property *)fdt_get_property(fdt, nodeoffset, - name, lenp); + return (struct fdt_property *)(uintptr_t) + fdt_get_property(fdt, nodeoffset, name, lenp); }
/** @@ -411,7 +411,7 @@ const void *fdt_getprop(const void *fdt, int nodeoffset, static inline void *fdt_getprop_w(void *fdt, int nodeoffset, const char *name, int *lenp) { - return (void *)fdt_getprop(fdt, nodeoffset, name, lenp); + return (void *)(uintptr_t)fdt_getprop(fdt, nodeoffset, name, lenp); }
/** diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c index 8382afd..1c897c5 100644 --- a/libfdt/fdt_ro.c +++ b/libfdt/fdt_ro.c @@ -81,7 +81,7 @@ static int nodename_eq(const void *fdt, int offset,
const char *fdt_string(const void *fdt, int stroffset) { - return (char *)fdt + fdt_off_dt_strings(fdt) + stroffset; + return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset; }
int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size) diff --git a/libfdt/fdt_rw.c b/libfdt/fdt_rw.c index 4a16014..6837fb1 100644 --- a/libfdt/fdt_rw.c +++ b/libfdt/fdt_rw.c @@ -261,7 +261,7 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name)
RW_CHECK_HEADER(fdt);
- namep = (char *)fdt_get_name(fdt, nodeoffset, &oldlen); + namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen); if (!namep) return oldlen;
@@ -436,7 +436,7 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize) /* But if that overlaps with the old tree... */ if (((tmp + newsize) > fdtstart) && (tmp < fdtend)) { /* Try right after the old tree instead */ - tmp = (char *)fdtend; + tmp = (char *)(uintptr_t)fdtend; if ((tmp + newsize) > ((char *)buf + bufsize)) return -FDT_ERR_NOSPACE; } 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 const void *_fdt_offset_ptr(const void *fdt, int offset)
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)