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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2009-10-09 03:58:13 (GMT)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-10-09 03:59:54 (GMT)
commitd3d2dfe2d723051cac323017af5d0180ba8de4c1 (patch)
treee3b3fc8daaaf8e191f128007fe56082b471a3b27
parentfed94549edc90b15fb3cd13e79026db51d6d55ce (diff)
downloadlinux-d3d2dfe2d723051cac323017af5d0180ba8de4c1.tar.xz
Input: i8042 - print debug data when testing AUX IRQ delivery
Sometimes it is not clear why IRQ delivery test failed so let's add some debug printks so we know the exact reason. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
-rw-r--r--drivers/input/serio/i8042.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index bc56e52..a315781 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -609,6 +609,8 @@ static irqreturn_t __init i8042_aux_test_irq(int irq, void *dev_id)
str = i8042_read_status();
if (str & I8042_STR_OBF) {
data = i8042_read_data();
+ dbg("%02x <- i8042 (aux_test_irq, %s)",
+ data, str & I8042_STR_AUXDATA ? "aux" : "kbd");
if (i8042_irq_being_tested &&
data == 0xa5 && (str & I8042_STR_AUXDATA))
complete(&i8042_aux_irq_delivered);
@@ -750,6 +752,7 @@ static int __init i8042_check_aux(void)
* AUX IRQ was never delivered so we need to flush the controller to
* get rid of the byte we put there; otherwise keyboard may not work.
*/
+ dbg(" -- i8042 (aux irq test timeout)");
i8042_flush();
retval = -1;
}