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Commit a23dc658 authored by Paulo Zanoni's avatar Paulo Zanoni Committed by Daniel Vetter
Browse files

drm/i915: don't read cursor registers on powered down pipes 



At i915_display_info, don't call cursor_position() for a disabled
CRTC, since the CRTC may be on a powered down pipe, and this will
cause "Unclaimed register before interrupt" error messages.

Testcase: igt/pm_pc8/debugfs-read
Signed-off-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent b0e5ddf3

drivers/gpu/drm/i915/i915_debugfs.c

+7 −6
Original line number Diff line number Diff line
@@ -2334,7 +2334,7 @@ static int i915_display_info(struct seq_file *m, void *unused) 
		seq_printf(m, "CRTC %d: pipe: %c, active: %s\n",

			   crtc->base.base.id, pipe_name(crtc->pipe),

			   yesno(crtc->active));

		if (crtc->active)

		if (crtc->active) {

			intel_crtc_info(m, crtc);



			active = cursor_position(dev, crtc->pipe, &x, &y);
@@ -2343,6 +2343,7 @@ static int i915_display_info(struct seq_file *m, void *unused) 
				   x, y, crtc->cursor_addr,

				   yesno(active));

		}

	}



	seq_printf(m, "\n");

	seq_printf(m, "Connector info\n");