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Fixing bug: Keyboard locks up after 8s pwr press

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The EC was not re-enabling keyboard scanning on boot if the power button
was released.  This works fine if the power button is released before
the shutdown is complete, but if the user holds it down until the device
is completed powered down the lock will never be released, and the next
time they turn on the computer, the keyboard won't work.

To fix this, all that is needed is to make the power event task keep
unlocking it whenever the power button isn't pressed down.  There's
no problem with unlocking multiple times, so it's not dangerous to do
this.

BUG=chrome-os-partner:12070
TEST=Boot the machine normally, then press and hold the power button
until the machine is entirely powered down before releasing it.  Press
the power button a second time to turn on the machine.  You should be
able to type as normal.

Change-Id: I88852ed228bd8f6a9446406bab642812ef1327db
Signed-off-by: Charlie Mooney <charliemooney@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/28871
Reviewed-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
Charlie Mooney
2012-07-31 15:58:03 -07:00
committed by Gerrit
parent 77000e73bc
commit ae8e24acb7
1 changed files with 1 additions and 1 deletions
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2
common/gaia_power.c
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@@ -175,7 +175,7 @@ static int check_for_power_off_event(void)
}
/* Dis/Enable keyboard scanning when the power button state changes */
if (pressed != power_button_was_pressed)
if (!pressed || pressed != power_button_was_pressed)
keyboard_enable_scanning(!pressed);