From 9ac63cdf132f430bf4bf33561b15298538db6070 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 16 Jan 2017 22:17:36 +0000
Subject: [PATCH xserver] xfree86: Take the input lock for xf86RecolorCursor

xf86RecolorCursor() may be called directly from XRecolorCursor as well
as from xf86ScreenSetCursor(). In the latter case, the input lock is
already held, but not for the former and so we need to add a wrapper
function that acquires the input lock before performing
xf86RecolorCursor()

References: https://bugs.freedesktop.org/show_bug.cgi?id=99358
---
 hw/xfree86/ramdac/xf86HWCurs.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/hw/xfree86/ramdac/xf86HWCurs.c b/hw/xfree86/ramdac/xf86HWCurs.c
index 4481320..55d5861 100644
--- a/hw/xfree86/ramdac/xf86HWCurs.c
+++ b/hw/xfree86/ramdac/xf86HWCurs.c
@@ -22,6 +22,9 @@
 
 #include "servermd.h"
 
+static void
+xf86RecolorCursor_locked(xf86CursorScreenPtr ScreenPriv, CursorPtr pCurs);
+
 static CARD32
 xf86ReverseBitOrder(CARD32 v)
 {
@@ -204,7 +207,7 @@ xf86ScreenSetCursor(ScreenPtr pScreen, CursorPtr pCurs, int x, int y)
         if (!xf86DriverLoadCursorImage (infoPtr, bits))
             return FALSE;
 
-    xf86RecolorCursor(pScreen, pCurs, 1);
+    xf86RecolorCursor_locked (ScreenPriv, pCurs);
 
     (*infoPtr->SetCursorPosition) (infoPtr->pScrn, x, y);
 
@@ -312,12 +315,9 @@ xf86MoveCursor(ScreenPtr pScreen, int x, int y)
     input_unlock();
 }
 
-void
-xf86RecolorCursor(ScreenPtr pScreen, CursorPtr pCurs, Bool displayed)
+static void
+xf86RecolorCursor_locked(xf86CursorScreenPtr ScreenPriv, CursorPtr pCurs)
 {
-    xf86CursorScreenPtr ScreenPriv =
-        (xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
-                                               xf86CursorScreenKey);
     xf86CursorInfoPtr infoPtr = ScreenPriv->CursorInfoPtr;
 
     /* recoloring isn't applicable to ARGB cursors and drivers
@@ -357,6 +357,18 @@ xf86RecolorCursor(ScreenPtr pScreen, CursorPtr pCurs, Bool displayed)
     }
 }
 
+void
+xf86RecolorCursor(ScreenPtr pScreen, CursorPtr pCurs, Bool displayed)
+{
+    xf86CursorScreenPtr ScreenPriv =
+        (xf86CursorScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
+                                               xf86CursorScreenKey);
+
+    input_lock();
+    xf86RecolorCursor_locked (ScreenPriv, pCurs);
+    input_unlock();
+}
+
 /* These functions assume that MaxWidth is a multiple of 32 */
 static unsigned char *
 RealizeCursorInterleave0(xf86CursorInfoPtr infoPtr, CursorPtr pCurs)
-- 
2.9.3