3.16.7-ckt4 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Scot Doyle <lkm...@scotdoyle.com> commit 813008cd3e93ea8a571b2b7d5b9360a3105b50f7 upstream. BIOS or firmware can modify hardware state during suspend/resume, for example on the Toshiba CB35 or Lenovo T400, so log a debug message instead of a warning if the backlight is unexpectedly enabled. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80930 Cc: Jani Nikula <jani.nik...@intel.com> Signed-off-by: Scot Doyle <lkm...@scotdoyle.com> Signed-off-by: Jani Nikula <jani.nik...@intel.com> Cc: Ben Hutchings <b...@decadent.org.uk> Signed-off-by: Luis Henriques <luis.henriq...@canonical.com> --- drivers/gpu/drm/i915/intel_panel.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 12b02fe1d0ae..59b294c5fe41 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -711,7 +711,7 @@ static void pch_enable_backlight(struct intel_connector *connector) cpu_ctl2 = I915_READ(BLC_PWM_CPU_CTL2); if (cpu_ctl2 & BLM_PWM_ENABLE) { - WARN(1, "cpu backlight already enabled\n"); + DRM_DEBUG_KMS("cpu backlight already enabled\n"); cpu_ctl2 &= ~BLM_PWM_ENABLE; I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2); } @@ -755,7 +755,7 @@ static void i9xx_enable_backlight(struct intel_connector *connector) ctl = I915_READ(BLC_PWM_CTL); if (ctl & BACKLIGHT_DUTY_CYCLE_MASK_PNV) { - WARN(1, "backlight already enabled\n"); + DRM_DEBUG_KMS("backlight already enabled\n"); I915_WRITE(BLC_PWM_CTL, 0); } @@ -786,7 +786,7 @@ static void i965_enable_backlight(struct intel_connector *connector) ctl2 = I915_READ(BLC_PWM_CTL2); if (ctl2 & BLM_PWM_ENABLE) { - WARN(1, "backlight already enabled\n"); + DRM_DEBUG_KMS("backlight already enabled\n"); ctl2 &= ~BLM_PWM_ENABLE; I915_WRITE(BLC_PWM_CTL2, ctl2); } @@ -820,7 +820,7 @@ static void vlv_enable_backlight(struct intel_connector *connector) ctl2 = I915_READ(VLV_BLC_PWM_CTL2(pipe)); if (ctl2 & BLM_PWM_ENABLE) { - WARN(1, "backlight already enabled\n"); + DRM_DEBUG_KMS("backlight already enabled\n"); ctl2 &= ~BLM_PWM_ENABLE; I915_WRITE(VLV_BLC_PWM_CTL2(pipe), ctl2); } -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
