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Input: i8042 - print debug data when testing AUX IRQ delivery

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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>
This commit is contained in:
Dmitry Torokhov 2009-10-08 20:58:13 -07:00
parent fed94549ed
commit d3d2dfe2d7
1 changed files with 3 additions and 0 deletions
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3
drivers/input/serio/i8042.c
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@ -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;
}