From: Alan Cox <alan@linux.intel.com>
Date: Fri, 11 May 2018 22:39:55 +0000 (+0100)
Subject: amstradnc: fix bug where you could issue gfx ioctls from any tty!
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=07e321e579a55831d581a42dda549f4e98a37d5f;p=FUZIX.git

amstradnc: fix bug where you could issue gfx ioctls from any tty!
---

diff --git a/Kernel/platform-amstradnc/devgfx.c b/Kernel/platform-amstradnc/devgfx.c
index 8514d364..eb928807 100644
--- a/Kernel/platform-amstradnc/devgfx.c
+++ b/Kernel/platform-amstradnc/devgfx.c
@@ -38,7 +38,7 @@ int gfx_ioctl(uint8_t minor, uarg_t arg, char *ptr)
 {
   uint8_t *tmp;
   uint16_t l;
-  if (arg >> 8 != 0x03)
+  if (minor != 1 || (arg >> 8 != 0x03))
     return vt_ioctl(minor, arg, ptr);
 
   switch(arg) {