[patch 29/31] Input: i8042 - fix AUX IRQ delivery check

[Greg KH]

-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Dmitry Torokhov <[EMAIL PROTECTED]>

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.

Cc: Chuck Ebbert <[EMAIL PROTECTED]>
Signed-off-by: Dmitry Torokhov <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>

---
 drivers/input/serio/i8042.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -543,6 +543,7 @@ static int __devinit i8042_check_aux(voi
 {
        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(voi
                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(voi
  * 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.

-- 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/