From: Zhang Rui <rui.zhang@intel.com>
To: "Brown, Len" <lenb@kernel.org>
Cc: "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
Matthew Garrett <mjg59@srcf.ucam.org>,
"Zhang, Rui" <rui.zhang@intel.com>
Subject: [PATCH 5/7] ACPI video: check cap._DDC flag before getting EDID
Date: Mon, 06 Dec 2010 15:04:24 +0800 [thread overview]
Message-ID: <1291619064.19296.579.camel@rui> (raw)
cap._DDC is defined but never used.
Check this flag now and don't try to get EDID for video output devices with this flag cleared.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
drivers/acpi/video.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-2.6/drivers/acpi/video.c
===================================================================
--- linux-2.6.orig/drivers/acpi/video.c
+++ linux-2.6/drivers/acpi/video.c
@@ -1275,6 +1275,9 @@ int acpi_video_get_edid(struct acpi_devi
if (!video_device)
continue;
+ if (!video_device->cap._DDC)
+ continue;
+
if (type) {
switch (type) {
case ACPI_VIDEO_DISPLAY_CRT:
next reply other threads:[~2010-12-06 7:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-06 7:04 Zhang Rui [this message]
2010-12-06 12:53 ` [PATCH 5/7] ACPI video: check cap._DDC flag before getting EDID Matthew Garrett
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