1 files changed, 23 insertions, 3 deletions

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 1a0cea3c5294..2763394869d2 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -12,7 +12,6 @@
 
 #include <linux/delay.h>
 #include <linux/module.h>
-#include <linux/moduleparam.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
@@ -64,6 +63,12 @@ static unsigned int i8042_blink_frequency = 500;
 module_param_named(panicblink, i8042_blink_frequency, uint, 0600);
 MODULE_PARM_DESC(panicblink, "Frequency with which keyboard LEDs should blink when kernel panics");
 
+#ifdef CONFIG_X86
+static unsigned int i8042_dritek;
+module_param_named(dritek, i8042_dritek, bool, 0);
+MODULE_PARM_DESC(dritek, "Force enable the Dritek keyboard extension");
+#endif
+
 #ifdef CONFIG_PNP
 static int i8042_nopnp;
 module_param_named(nopnp, i8042_nopnp, bool, 0);
@@ -280,7 +285,14 @@ static void i8042_stop(struct serio *serio)
         struct i8042_port *port = serio->port_data;
 
         port->exists = 0;
-        synchronize_sched();
+
+        /*
+         * We synchronize with both AUX and KBD IRQs because there is
+         * a (very unlikely) chance that AUX IRQ is raised for KBD port
+         * and vice versa.
+         */
+        synchronize_irq(I8042_AUX_IRQ);
+        synchronize_irq(I8042_KBD_IRQ);
         port->serio = NULL;
 }
 
@@ -1139,6 +1151,7 @@ static int __devinit i8042_setup_kbd(void)
 static int __devinit i8042_probe(struct platform_device *dev)
 {
         int error;
+        char param;
 
         error = i8042_controller_selftest();
         if (error)
@@ -1159,7 +1172,14 @@ static int __devinit i8042_probe(struct platform_device *dev)
                 if (error)
                         goto out_fail;
         }
-
+#ifdef CONFIG_X86
+        if (i8042_dritek) {
+                param = 0x90;
+                error = i8042_command(&param, 0x1059);
+                if (error)
+                        goto out_fail;
+        }
+#endif
 /*
  * Ok, everything is ready, let's register all serio ports
  */