# --- T2-COPYRIGHT-BEGIN ---
# t2/package/*/xorg-server/hotfix-ioperm.patch
# Copyright (C) 2024 - 2026 The T2 SDE Project
# SPDX-License-Identifier: GPL-2.0 or patched project license
# --- T2-COPYRIGHT-END ---

--- a/hw/xfree86/os-support/linux/lnx_video.c
+++ b/hw/xfree86/os-support/linux/lnx_video.c
@@ -116,38 +116,16 @@
 static Bool
 hwEnableIO(void)
 {
-    short i;
-    size_t n=0;
-    int begin, end;
-    char *buf=NULL, target[5];
-    FILE *fp;
-
     if (ioperm(0, 1024, 1) || iopl(3)) {
-        ErrorF("xf86EnableIO: failed to enable I/O ports access (%s)\n",
+        ErrorF("xf86EnableIOPorts: failed to set IOPL for I/O (%s)\n",
                strerror(errno));
         return FALSE;
     }
-
 #if !defined(__alpha__)
-    target[4] = '\0';
-
-    /* trap access to the keyboard controller(s) and timer chip(s) */
-    fp = fopen("/proc/ioports", "r");
-    while (getline(&buf, &n, fp) != -1) {
-        if ((strstr(buf, "keyboard") != NULL) || (strstr(buf, "timer") != NULL)) {
-            for (i=0; i<4; i++)
-                target[i] = buf[i+2];
-            begin = atoi(target);
-
-            for (i=0; i<4; i++)
-                target[i] = buf[i+7];
-            end = atoi(target);
-
-            ioperm(begin, end-begin+1, 0);
-        }
-    }
-    free(buf);
-    fclose(fp);
+    /* XXX: this is actually not trapping anything because of iopl(3)
+     * above */
+    ioperm(0x40, 4, 0);         /* trap access to the timer chip */
+    ioperm(0x60, 4, 0);         /* trap access to the keyboard controller */
 #endif
 
     return TRUE;