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memp: Fixup LWIP_HOOK_MEMP_AVAILABLE() hook

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I got below build warning if LWIP_HOOK_MEMP_AVAILABLE is defined.

src/core/memp.c: In function 'memp_free_pool':
src/core/memp.c:352:16: warning: variable 'old_first' set but not used [-Wunused-but-set-variable]
   struct memp *old_first;
                ^
src/core/memp.c: In function 'memp_free':
src/core/memp.c:413:6: warning: 'old_first' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (old_first == NULL) {

The LWIP_HOOK_MEMP_AVAILABLE() hook does not work, fix it.

Fixes: c838e1ed5b ("Implement possibility to declare private memory pools")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
This commit is contained in:
Axel Lin 2015-12-04 22:58:32 +08:00 committed by Dirk Ziegelmeier
parent 7f92660598
commit a21144b834
1 changed files with 29 additions and 10 deletions
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39
src/core/memp.c
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@ -344,18 +344,16 @@ memp_malloc_fn(memp_t type, const char* file, const int line)
return memp;
}
void
memp_free_pool(const struct memp_desc* desc, void *mem)
static void
#ifdef LWIP_HOOK_MEMP_AVAILABLE
do_memp_free_pool(const struct memp_desc* desc, void *mem, struct memp **old_first)
#else
do_memp_free_pool(const struct memp_desc* desc, void *mem)
#endif
{
struct memp *memp;
#ifdef LWIP_HOOK_MEMP_AVAILABLE
struct memp *old_first;
#endif
SYS_ARCH_DECL_PROTECT(old_level);
if (mem == NULL) {
return;
}
LWIP_ASSERT("memp_free: mem properly aligned",
((mem_ptr_t)mem % MEM_ALIGNMENT) == 0);
@ -369,9 +367,12 @@ memp_free_pool(const struct memp_desc* desc, void *mem)
#endif /* MEMP_OVERFLOW_CHECK */
memp->next = *desc->tab;
#ifdef LWIP_HOOK_MEMP_AVAILABLE
old_first = *desc->tab;
if (old_first)
*old_first = *desc->tab;
#endif
*desc->tab = memp;
#if MEMP_SANITY_CHECK
@ -381,6 +382,20 @@ memp_free_pool(const struct memp_desc* desc, void *mem)
SYS_ARCH_UNPROTECT(old_level);
}
void
memp_free_pool(const struct memp_desc* desc, void *mem)
{
if ((desc == NULL) || (mem == NULL)) {
return;
}
#ifdef LWIP_HOOK_MEMP_AVAILABLE
do_memp_free_pool(desc, mem, NULL);
#else
do_memp_free_pool(desc, mem);
#endif
}
/**
* Put an element back into its pool.
*
@ -405,7 +420,11 @@ memp_free(memp_t type, void *mem)
MEMP_STATS_DEC(used, type);
memp_free_pool(memp_pools[type], mem);
#ifdef LWIP_HOOK_MEMP_AVAILABLE
do_memp_free_pool(memp_pools[type], mem, &old_first);
#else
do_memp_free_pool(memp_pools[type], mem);
#endif
SYS_ARCH_UNPROTECT(old_level);