From 4b65c3943c3fffcee3ec2b82012832a23e1be6c2 Mon Sep 17 00:00:00 2001
From: eladash <elad3356p@gmail.com>
Date: Wed, 26 Dec 2018 16:28:26 +0200
Subject: [PATCH] Fix sys_semaphore_post count check

---
 rpcs3/Emu/Cell/lv2/sys_semaphore.cpp | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/rpcs3/Emu/Cell/lv2/sys_semaphore.cpp b/rpcs3/Emu/Cell/lv2/sys_semaphore.cpp
index a59d9680d5..18c07ca7b2 100644
--- a/rpcs3/Emu/Cell/lv2/sys_semaphore.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_semaphore.cpp
@@ -201,16 +201,11 @@ error_code sys_semaphore_post(ppu_thread& ppu, u32 sem_id, s32 count)
 {
 	sys_semaphore.trace("sys_semaphore_post(sem_id=0x%x, count=%d)", sem_id, count);
 
-	if (count < 0)
-	{
-		return CELL_EINVAL;
-	}
-
 	const auto sem = idm::get<lv2_obj, lv2_sema>(sem_id, [&](lv2_sema& sema)
 	{
 		const s32 val = sema.val;
 
-		if (val >= 0 && count <= sema.max - val)
+		if (val >= 0 && count > 0 && count <= sema.max - val)
 		{
 			if (sema.val.compare_and_swap_test(val, val + count))
 			{
@@ -226,6 +221,11 @@ error_code sys_semaphore_post(ppu_thread& ppu, u32 sem_id, s32 count)
 		return CELL_ESRCH;
 	}
 
+	if (count <= 0)
+	{
+		return CELL_EINVAL;
+	}
+
 	if (sem.ret)
 	{
 		return CELL_OK;