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> --- 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 59b028f..8e37444 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -801,7 +801,7 @@ 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); } @@ -845,7 +845,7 @@ 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); } @@ -876,7 +876,7 @@ 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); } @@ -910,7 +910,7 @@ 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); } _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
