drm/i915: Return zero as the scanline counter for disabled pipes

We print the scanline counters as unsigned integers so the -1
here just makes the debugs/traces look a bit messy. Zero seems
equally valid for this usecase.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210304170421.10901-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 5cfaec5..67c6d71 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -794,7 +794,7 @@ static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
        int position, vtotal;
 
        if (!crtc->active)
-               return -1;
+               return 0;
 
        vblank = &crtc->base.dev->vblank[drm_crtc_index(&crtc->base)];
        mode = &vblank->hwmode;