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authorAlan Jenkins <alan-jenkins@tuffmail.co.uk>2010-02-17 12:17:33 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-02-18 02:07:34 -0800
commitc2d1a2a11b9b29c3be1dd781dc88518ffab8d4be (patch)
treeb0362e1c489d5e26d29437ea017d0bbc54567638
parenta9f0c381973097462d9688dc26fe66f4f020502e (diff)
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Input: i8042 - fix KBC jam during hibernate
633aae2 "Input: i8042 - switch to using dev_pm_ops" removed handling for PMSG_THAW, since we do not need to do anything during freeze and thus it was thougt that thaw is not needed as well. However, there is a period when interrupts are kept off, and if key happens to be pressed during that time KBC becomes jammed. To avoid the jam we simply need to poll KBC once during thaw. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
-rw-r--r--drivers/input/serio/i8042.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index d84a36e545f6..b54aee7cd9e3 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -1161,9 +1161,17 @@ static int i8042_pm_restore(struct device *dev)
return 0;
}
+static int i8042_pm_thaw(struct device *dev)
+{
+ i8042_interrupt(0, NULL);
+
+ return 0;
+}
+
static const struct dev_pm_ops i8042_pm_ops = {
.suspend = i8042_pm_reset,
.resume = i8042_pm_restore,
+ .thaw = i8042_pm_thaw,
.poweroff = i8042_pm_reset,
.restore = i8042_pm_restore,
};
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