Input: i8042 - fix AUX IRQ delivery check

On boxes that do not implement AUX LOOP command we can not
verify AUX IRQ delivery and must assume that it is wired
properly.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 1364c7964db4..c3fdfc1f342a 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -543,6 +543,7 @@ static int __devinit i8042_check_aux(void)
 {
         int retval = -1;
         int irq_registered = 0;
+        int aux_loop_broken = 0;
         unsigned long flags;
         unsigned char param;
 
@@ -572,6 +573,8 @@ static int __devinit i8042_check_aux(void)
                 if (i8042_command(&param, I8042_CMD_AUX_TEST) ||
                     (param && param != 0xfa && param != 0xff))
                         return -1;
+
+                aux_loop_broken = 1;
         }
 
 /*
@@ -595,7 +598,7 @@ static int __devinit i8042_check_aux(void)
  * used it for a PCI card or somethig else.
  */
 
-        if (i8042_noloop) {
+        if (i8042_noloop || aux_loop_broken) {
 /*
  * Without LOOP command we can't test AUX IRQ delivery. Assume the port
  * is working and hope we are right.