[patch 062/104] ACPI: EC: count interrupts only if called frominterrupt handler.

[Greg KH]

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

------------------
From: Alexey Starikovskiy <astarikovskiy@xxxxxxx>

commit 7b4d469228a92a00e412675817cedd60133de38a upstream.

fix 2.6.28 EC interrupt storm regression

Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
Cc: Alan Jenkins <alan-jenkins@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/acpi/ec.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -219,7 +219,8 @@ static void gpe_transaction(struct acpi_
 	goto unlock;
 err:
 	/* false interrupt, state didn't change */
-	++ec->curr->irq_count;
+	if (in_interrupt())
+		++ec->curr->irq_count;
 unlock:
 	spin_unlock_irqrestore(&ec->curr_lock, flags);
 }

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