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Subject[PATCH] i915: slow acpi_lid_open() causes flickering - V2
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acpi_lid_open() could take up to 10ms on my computer.  Some component is
calling the drm GETCONNECTOR ioctl many times in a row. This results in
flickering (for example, when starting a video). Fix it by assuming an
always connected lid status.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
---
drivers/gpu/drm/i915/intel_lvds.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index aa74e59..05a31ae 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -623,6 +623,13 @@ static const struct dmi_system_id bad_lid_status[] = {
},
},
{
+ .ident = "Aspire 1810T",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1810T"),
+ },
+ },
+ {
.ident = "PC-81005",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MALATA"),
@@ -643,7 +650,7 @@ static enum drm_connector_status intel_lvds_detect(struct drm_connector *connect
{
enum drm_connector_status status = connector_status_connected;

- if (!acpi_lid_open() && !dmi_check_system(bad_lid_status))
+ if (!dmi_check_system(bad_lid_status) && !acpi_lid_open())
status = connector_status_disconnected;

return status;
--
1.6.6



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