From: EunBong Song <eunb.song@samsung.com>
Date: Tue, 11 Apr 2017 06:55:05 +0000 (+0900)
Subject: net lwip: disable priority inheritance on all signaling semaphores
X-Git-Tag: 1.1_Public_Release~614^2~56
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=24bed91b4428168e489111abdcc2cdbb481cd33a;p=rtos%2Ftinyara.git

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
--- 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;
 }