linux-kernel - [PATCH] ACPI video: Ignore AE_AML_PACKAGE_LIMIT errors after

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Date:	Wed, 10 Oct 2012 02:19:06 +0400
From:	Igor Murzov <e-mail@...e.by>
To:	linux-acpi@...r.kernel.org
Cc:	Zhang Rui <rui.zhang@...el.com>, Len Brown <lenb@...nel.org>,
	Sergey V <sftp.mtuci@...il.com>, linux-kernel@...r.kernel.org,
	Igor Murzov <e-mail@...e.by>
Subject: [PATCH] ACPI video: Ignore AE_AML_PACKAGE_LIMIT errors after _DOD evaluation.

This should fix brightness controls on some laptops.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861

Signed-off-by: Igor Murzov <e-mail@...e.by>
---
 drivers/acpi/video.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 1e0a9e1..01bb58d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1349,8 +1349,12 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
 	struct acpi_device *dev;
 
 	status = acpi_video_device_enumerate(video);
-	if (status)
-		return status;
+	if (status) {
+		if (status == AE_AML_PACKAGE_LIMIT)
+			status = 0; /* Ignore this error */
+		else
+			return status;
+	}
 
 	list_for_each_entry(dev, &device->children, node) {
 
-- 
1.7.12

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