The drm_buddy_test's alloc_contiguous test used a u64 for the page size,
which was then updated to be an 'unsigned long' to avoid 64-bit
multiplication division helpers.

However, the variable is logged by some KUNIT_ASSERT_EQ_MSG() using the
'%d' or '%llu' format specifiers, the former of which is always wrong,
and the latter is no longer correct now that ps is no longer a u64. Fix
these to all use '%lu'.

Also, drm_mm_test calls KUNIT_FAIL() with an empty string as the
message. gcc warns if a printf format string is empty (apparently), so
give these some more detailed error messages, which should be more
useful anyway.

Fixes: a64056bb5a32 ("drm/tests/drm_buddy: add alloc_contiguous test")
Fixes: fca7526b7d89 ("drm/tests/drm_buddy: fix build failure on 32-bit targets")
Fixes: fc8d29e298cf ("drm: selftest: convert drm_mm selftest to KUnit")
Signed-off-by: David Gow <david...@google.com>
---
 drivers/gpu/drm/tests/drm_buddy_test.c | 14 +++++++-------
 drivers/gpu/drm/tests/drm_mm_test.c    |  6 +++---
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c 
b/drivers/gpu/drm/tests/drm_buddy_test.c
index 8a464f7f4c61..3dbfa3078449 100644
--- a/drivers/gpu/drm/tests/drm_buddy_test.c
+++ b/drivers/gpu/drm/tests/drm_buddy_test.c
@@ -55,30 +55,30 @@ static void drm_test_buddy_alloc_contiguous(struct kunit 
*test)
                KUNIT_ASSERT_FALSE_MSG(test,
                                       drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                              ps, ps, list, 0),
-                                      "buddy_alloc hit an error size=%d\n",
+                                      "buddy_alloc hit an error size=%lu\n",
                                       ps);
        } while (++i < n_pages);
 
        KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                           3 * ps, ps, 
&allocated,
                                                           
DRM_BUDDY_CONTIGUOUS_ALLOCATION),
-                              "buddy_alloc didn't error size=%d\n", 3 * ps);
+                              "buddy_alloc didn't error size=%lu\n", 3 * ps);
 
        drm_buddy_free_list(&mm, &middle);
        KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                           3 * ps, ps, 
&allocated,
                                                           
DRM_BUDDY_CONTIGUOUS_ALLOCATION),
-                              "buddy_alloc didn't error size=%llu\n", 3 * ps);
+                              "buddy_alloc didn't error size=%lu\n", 3 * ps);
        KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                           2 * ps, ps, 
&allocated,
                                                           
DRM_BUDDY_CONTIGUOUS_ALLOCATION),
-                              "buddy_alloc didn't error size=%llu\n", 2 * ps);
+                              "buddy_alloc didn't error size=%lu\n", 2 * ps);
 
        drm_buddy_free_list(&mm, &right);
        KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                           3 * ps, ps, 
&allocated,
                                                           
DRM_BUDDY_CONTIGUOUS_ALLOCATION),
-                              "buddy_alloc didn't error size=%llu\n", 3 * ps);
+                              "buddy_alloc didn't error size=%lu\n", 3 * ps);
        /*
         * At this point we should have enough contiguous space for 2 blocks,
         * however they are never buddies (since we freed middle and right) so
@@ -87,13 +87,13 @@ static void drm_test_buddy_alloc_contiguous(struct kunit 
*test)
        KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                            2 * ps, ps, 
&allocated,
                                                            
DRM_BUDDY_CONTIGUOUS_ALLOCATION),
-                              "buddy_alloc hit an error size=%d\n", 2 * ps);
+                              "buddy_alloc hit an error size=%lu\n", 2 * ps);
 
        drm_buddy_free_list(&mm, &left);
        KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
                                                            3 * ps, ps, 
&allocated,
                                                            
DRM_BUDDY_CONTIGUOUS_ALLOCATION),
-                              "buddy_alloc hit an error size=%d\n", 3 * ps);
+                              "buddy_alloc hit an error size=%lu\n", 3 * ps);
 
        total = 0;
        list_for_each_entry(block, &allocated, link)
diff --git a/drivers/gpu/drm/tests/drm_mm_test.c 
b/drivers/gpu/drm/tests/drm_mm_test.c
index 1eb0c304f960..f37c0d765865 100644
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -157,7 +157,7 @@ static void drm_test_mm_init(struct kunit *test)
 
        /* After creation, it should all be one massive hole */
        if (!assert_one_hole(test, &mm, 0, size)) {
-               KUNIT_FAIL(test, "");
+               KUNIT_FAIL(test, "mm not one hole on creation");
                goto out;
        }
 
@@ -171,14 +171,14 @@ static void drm_test_mm_init(struct kunit *test)
 
        /* After filling the range entirely, there should be no holes */
        if (!assert_no_holes(test, &mm)) {
-               KUNIT_FAIL(test, "");
+               KUNIT_FAIL(test, "mm has holes when filled");
                goto out;
        }
 
        /* And then after emptying it again, the massive hole should be back */
        drm_mm_remove_node(&tmp);
        if (!assert_one_hole(test, &mm, 0, size)) {
-               KUNIT_FAIL(test, "");
+               KUNIT_FAIL(test, "mm does not have single hole after emptying");
                goto out;
        }
 
-- 
2.44.0.rc0.258.g7320e95886-goog

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