From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Wed, 24 Nov 2010 23:03:32 +0000 (+0100)
Subject: ACPI / PM: Do not refcount power resources that can't be turned on
X-Git-Tag: v2.6.37-rc6~17^2~1^3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=12b3b5afed67e08aa641d30e57df20dab2e33432;p=profile%2Fivi%2Fkernel-x86-ivi.git

ACPI / PM: Do not refcount power resources that can't be turned on

If turning on a power resource fails, do not reference count it,
since it cannot be in use in that case.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 792a830..4c9c2fb 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -213,11 +213,13 @@ static int acpi_power_on(acpi_handle handle)
 				  resource->name));
 	} else {
 		result = __acpi_power_on(resource);
+		if (result)
+			resource->ref_count--;
 	}
 
 	mutex_unlock(&resource->resource_lock);
 
-	return 0;
+	return result;
 }
 
 static int acpi_power_off_device(acpi_handle handle)