From: Andreas Schwab <schwab@linux-m68k.org>
Date: Thu, 8 Sep 2016 11:21:05 +0200
Subject: linux-user: properly test for infinite timeout in poll (#8)

After "linux-user: use target_ulong" the poll syscall was no longer
handling infinite timeout.

/home/abuild/rpmbuild/BUILD/qemu-2.7.0-rc5/linux-user/syscall.c:9773:26: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
                 if (arg3 >= 0) {
                          ^~

Signed-off-by: Andreas Schwab <schwab@suse.de>
---
 linux-user/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 6ada54d3a19e455c0c12a1d4b321..69c9dee831d8fdb96cde3a0b996c 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -10052,7 +10052,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_ulong arg1,
             {
                 struct timespec ts, *pts;
 
-                if (arg3 >= 0) {
+                if ((abi_long)arg3 >= 0) {
                     /* Convert ms to secs, ns */
                     ts.tv_sec = arg3 / 1000;
                     ts.tv_nsec = (arg3 % 1000) * 1000000LL;