Message ID | 1341007940-10207-2-git-send-email-seth.forshee@canonical.com |
---|---|
State | New |
Headers | show |
Applied to Quantal master-next. Thanks, Leann On 06/29/2012 03:12 PM, Seth Forshee wrote: > The Lenovo Thinkpad T410 has the LVDS_PIPEB_SELECT bit set in the LVDS > register when booted with the lid closed, even though the LVDS hasn't > really been initialized. Ignore this bit so that the VBT value will be > used instead. > > Signed-off-by: Seth Forshee <seth.forshee@canonical.com> > Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> > (cherry picked from commit 14d94a3d82ab3ef6b3a9f881e134d5b48323b202 > git://people.freedesktop.org/~danvet/drm-intel drm-intel-next) > BugLink: http://bugs.launchpad.net/bugs/1012800 > --- > drivers/gpu/drm/i915/intel_display.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index a7c727d..d2c59cd 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -434,7 +434,7 @@ static bool is_dual_link_lvds(struct drm_i915_private *dev_priv, > * register is uninitialized. > */ > val = I915_READ(reg); > - if (!(val & ~LVDS_DETECTED)) > + if (!(val & ~(LVDS_PIPE_MASK | LVDS_DETECTED))) > val = dev_priv->bios_lvds_val; > dev_priv->lvds_val = val; > }
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a7c727d..d2c59cd 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -434,7 +434,7 @@ static bool is_dual_link_lvds(struct drm_i915_private *dev_priv, * register is uninitialized. */ val = I915_READ(reg); - if (!(val & ~LVDS_DETECTED)) + if (!(val & ~(LVDS_PIPE_MASK | LVDS_DETECTED))) val = dev_priv->bios_lvds_val; dev_priv->lvds_val = val; }