xserver-xorg: Fix X server 1.19 crash

Commit 6a5a4e60373c1386b311b2a8bb666c32d68a9d99 removes the configure of
useSIGIO option:

xfree86 SIGIO support is reworked to use internal versions of
OsBlockSIGIO and OsReleaseSIGIO

The check for useSIGIO is no longer needed.

(From OE-Core rev: 5ed1bc5b4dadc74f1db52179238fbbd145a59043)

Signed-off-by: Tom Hochstein <tom.hochstein@nxp.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/xorg-xserver/xserver-xorg/0003-Remove-check-for-useSIGIO-option.patch

@@ -0,0 +1,47 @@
+From cf407b16cd65ad6e26a9c8e5984e163409a5c0f7 Mon Sep 17 00:00:00 2001
+From: Prabhu Sundararaj <prabhu.sundararaj@nxp.com>
+Date: Mon, 30 Jan 2017 16:32:06 -0600
+Subject: [PATCH] Remove check for useSIGIO option
+
+Commit 6a5a4e60373c1386b311b2a8bb666c32d68a9d99 removes the configure of useSIGIO
+option.
+
+As the xfree86 SIGIO support is reworked to use internal versions of OsBlockSIGIO
+and OsReleaseSIGIO.
+
+No longer the check for useSIGIO is needed
+
+Upstream-Status: Pending
+
+Signed-off-by: Prabhu Sundararaj <prabhu.sundararaj@nxp.com>
+---
+ hw/xfree86/os-support/shared/sigio.c | 6 ------
+ 1 file changed, 6 deletions(-)
+
+diff --git a/hw/xfree86/os-support/shared/sigio.c b/hw/xfree86/os-support/shared/sigio.c
+index 884a71c..be76498 100644
+--- a/hw/xfree86/os-support/shared/sigio.c
++++ b/hw/xfree86/os-support/shared/sigio.c
+@@ -185,9 +185,6 @@ xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
+     int i;
+     int installed = FALSE;
+ 
+-    if (!xf86Info.useSIGIO)
+-        return 0;
+-
+     for (i = 0; i < MAX_FUNCS; i++) {
+         if (!xf86SigIOFuncs[i].f) {
+             if (xf86IsPipe(fd))
+@@ -256,9 +253,6 @@ xf86RemoveSIGIOHandler(int fd)
+     int max;
+     int ret;
+ 
+-    if (!xf86Info.useSIGIO)
+-        return 0;
+-
+     max = 0;
+     ret = 0;
+     for (i = 0; i < MAX_FUNCS; i++) {
+-- 
+2.7.4
+

meta/recipes-graphics/xorg-xserver/xserver-xorg_1.19.1.bb

@@ -4,6 +4,7 @@ SRC_URI += "file://musl-arm-inb-outb.patch \
             file://0001-configure.ac-Fix-check-for-CLOCK_MONOTONIC.patch \
             file://0002-configure.ac-Fix-wayland-scanner-and-protocols-locat.patch \
             file://0003-modesetting-Fix-16-bit-depth-bpp-mode.patch \
+            file://0003-Remove-check-for-useSIGIO-option.patch \
             "
 SRC_URI[md5sum] = "caa8ee7b2950abbf734347d137529fb6"
 SRC_URI[sha256sum] = "79ae2cf39d3f6c4a91201d8dad549d1d774b3420073c5a70d390040aa965a7fb"