net lwip: disable priority inheritance on all signaling semaphores

Disable priority inheritance on all semaphores used for signaling in lwip.

Change-Id: I8c01ddf8c0ff588cbb9948085d6e08986f5b2886
Signed-off-by: EunBong Song <eunb.song@samsung.com>

diff --git a/os/net/lwip/sys/arch/sys_arch.c b/os/net/lwip/sys/arch/sys_arch.c
index d1e2631..dd924fa 100644 (file)
--- a/os/net/lwip/sys/arch/sys_arch.c
+++ b/os/net/lwip/sys/arch/sys_arch.c
@@ -394,6 +394,7 @@ void sys_mbox_set_invalid(sys_mbox_t *mbox)
 err_t sys_sem_new(sys_sem_t *sem, u8_t count)
 {
        int status = -1;
+
        status = sem_init(sem, 0, count);
        if (status != OK) {
 #if SYS_STATS
@@ -404,6 +405,8 @@ err_t sys_sem_new(sys_sem_t *sem, u8_t count)
 #if SYS_STATS
        SYS_STATS_INC_USED(sem);
 #endif                                                 /* SYS_STATS */
+       if (count == 0)
+               sem_setprotocol(sem, SEM_PRIO_NONE);
 
        return ERR_OK;
 }