[U-Boot] [PATCH 2/7] dtc: Enable and fix -Wcast-qual warnings

gvb.uboot at gmail.com
2008-08-20T02:30:33Z

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)
--
1.5.6.3