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DateSat, 08 Jan 2000 20:57:08 +0100
FromLuca Montecchiani <>
Subject[2.3.3x] tiny "PS/2 Mouse" patch
Hi,

unlike the 2.2 the new 2.3 kernel skip the probe for PS/2 Mouse
if the bios has already detected it, maybe this is good.

Skipping that function PS/2 Mouse is never showed during kernel
boot process.

I've wrote a simple patch that correct this and also show the
irq where available.

Patch is quite simple and tested only on i386 platform.

ciao,
luca

--- pc_keyb.c.luca Sat Jan 8 18:33:36 2000
+++ pc_keyb.c Sun Jan 2 10:20:57 2000
@@ -746,7 +746,10 @@
int loops = 10;
int retval = 0;

- /* Check if the BIOS detected a device on the auxiliary port. */
+ /*
+ * Skip probe if the BIOS has already detected a device on the
+ * auxiliary port or arch != i386
+ */
if (aux_device_present == 0xaa)
return 1;

@@ -770,10 +773,8 @@

if (status & KBD_STAT_OBF) {
(void) kbd_read_input();
- if (status & KBD_STAT_MOUSE_OBF) {
- printk(KERN_INFO "Detected PS/2 Mouse Port.\n");
+ if (status & KBD_STAT_MOUSE_OBF)
retval = 1;
- }
break;
}
mdelay(1);
@@ -989,6 +990,12 @@
{
if (!detect_auxiliary_port())
return -EIO;
+
+#ifdef AUX_IRQ
+ printk(KERN_INFO "Detected PS/2 Mouse Port (irq = %d)\n",AUX_IRQ);
+#else
+ printk(KERN_INFO "Detected PS/2 Mouse Port\n");
+#endif

misc_register(&psaux_mouse);
queue = (struct aux_queue *) kmalloc(sizeof(*queue), GFP_KERNEL);
-
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