[Intel-gfx] [PATCH] drm/i915: Don't pin LRC in GGTT when dumping in debugfs

[Thomas Daniel]

LRC object does not need to be mapped into the GGTT when dumping. Just use
pin_pages. A side-effect of this patch is that a compiler warning goes away
(not checking return value of i915_gem_obj_ggtt_pin).

Signed-off-by: Thomas Daniel <thomas.daniel at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c |   19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index f91e7f7..7e1e7f7 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1801,25 +1801,30 @@ static int i915_dump_lrc(struct seq_file *m, void *unused)
 				struct page *page;
 				uint32_t *reg_state;
 				int j;
+				unsigned long ggtt_offset = 0;
 
-				i915_gem_obj_ggtt_pin(ctx_obj,
-						GEN8_LR_CONTEXT_ALIGN, 0);
-
-				page = i915_gem_object_get_page(ctx_obj, 1);
-				reg_state = kmap_atomic(page);
+				i915_gem_object_pin_pages(ctx_obj);
 
 				seq_printf(m, "CONTEXT: %s %u\n", ring->name,
 						intel_execlists_ctx_id(ctx_obj));
 
+				if (!i915_gem_obj_ggtt_bound(ctx_obj))
+					seq_puts(m, "\tNot bound in GGTT\n");
+				else
+					ggtt_offset = i915_gem_obj_ggtt_offset(ctx_obj);
+
+				page = i915_gem_object_get_page(ctx_obj, 1);
+				reg_state = kmap_atomic(page);
+
 				for (j = 0; j < 0x600 / sizeof(u32) / 4; j += 4) {
 					seq_printf(m, "\t[0x%08lx] 0x%08x 0x%08x 0x%08x 0x%08x\n",
-					i915_gem_obj_ggtt_offset(ctx_obj) + 4096 + (j * 4),
+					ggtt_offset + 4096 + (j * 4),
 					reg_state[j], reg_state[j + 1],
 					reg_state[j + 2], reg_state[j + 3]);
 				}
 				kunmap_atomic(reg_state);
 
-				i915_gem_object_ggtt_unpin(ctx_obj);
+				i915_gem_object_unpin_pages(ctx_obj);
 
 				seq_putc(m, '\n');
 			}
-- 
1.7.9.5