Since

commit 488dac0c9237647e9b8f788b6a342595bfa40bda
Author: Yicong Yang <[email protected]>
Date:   Sat Nov 21 22:17:19 2020 -0800

    libfs: fix error cast of negative value in simple_attr_write()

the kernel now rejects any negative values written to debugfs, rather
than casting them to u64. Since we are accustomed to having the -1 mean
U64_MAX, perform that conversion ourselves.

Signed-off-by: Chris Wilson <[email protected]>
Cc: Tvrtko Ursulin <[email protected]>
---
 lib/i915/gem.c                        | 2 +-
 lib/igt_gt.c                          | 2 +-
 tests/i915/gem_eio.c                  | 4 ++--
 tests/i915/gem_mmap_gtt.c             | 2 +-
 tests/i915/sysfs_heartbeat_interval.c | 4 ++--
 tests/i915/sysfs_preempt_timeout.c    | 6 +++---
 tests/i915/sysfs_timeslice_duration.c | 6 +++---
 7 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/lib/i915/gem.c b/lib/i915/gem.c
index 45db8a0fd..93ef4073b 100644
--- a/lib/i915/gem.c
+++ b/lib/i915/gem.c
@@ -123,7 +123,7 @@ static void reset_device(int i915)
 
        if (ioctl(i915, DRM_IOCTL_I915_GEM_THROTTLE)) {
                igt_info("Found wedged device, trying to reset and continue\n");
-               igt_sysfs_set(dir, "i915_wedged", "-1");
+               igt_sysfs_printf(dir, "i915_wedged", "%llu", -1ull);
        }
        igt_sysfs_set(dir, "i915_next_seqno", "1");
 
diff --git a/lib/igt_gt.c b/lib/igt_gt.c
index 8213526fc..453446da6 100644
--- a/lib/igt_gt.c
+++ b/lib/igt_gt.c
@@ -369,7 +369,7 @@ void igt_force_gpu_reset(int drm_fd)
        dir = igt_debugfs_dir(drm_fd);
 
        wedged = 0;
-       igt_sysfs_set(dir, "i915_wedged", "-1");
+       igt_sysfs_printf(dir, "i915_wedged", "%llu", -1ull);
        igt_sysfs_scanf(dir, "i915_wedged", "%d", &wedged);
 
        close(dir);
diff --git a/tests/i915/gem_eio.c b/tests/i915/gem_eio.c
index cc5ab2b83..ae53227c6 100644
--- a/tests/i915/gem_eio.c
+++ b/tests/i915/gem_eio.c
@@ -88,7 +88,7 @@ static void manual_hang(int drm_fd)
 {
        int dir = igt_debugfs_dir(drm_fd);
 
-       igt_sysfs_set(dir, "i915_wedged", "-1");
+       igt_sysfs_printf(dir, "i915_wedged", "%llu", -1ull);
 
        close(dir);
 }
@@ -236,7 +236,7 @@ static void hang_handler(union sigval arg)
                                    "%d", DROP_RCU));
 
        igt_nsec_elapsed(ts);
-       igt_assert(igt_sysfs_set(dir, "i915_wedged", "-1"));
+       igt_assert(igt_sysfs_printf(dir, "i915_wedged", "%llu", -1ull));
        /* -> wake up gem_sync() in check_wait() */
 
        sched_yield();
diff --git a/tests/i915/gem_mmap_gtt.c b/tests/i915/gem_mmap_gtt.c
index 0b1d5ce99..6ecff12b9 100644
--- a/tests/i915/gem_mmap_gtt.c
+++ b/tests/i915/gem_mmap_gtt.c
@@ -713,7 +713,7 @@ test_hang(int fd)
        count = 0;
        dir = igt_debugfs_dir(fd);
        igt_until_timeout(5) {
-               igt_sysfs_set(dir, "i915_wedged", "-1");
+               igt_sysfs_printf(dir, "i915_wedged", "%llu", -1ull);
                if (READ_ONCE(control->error))
                        break;
                count++;
diff --git a/tests/i915/sysfs_heartbeat_interval.c 
b/tests/i915/sysfs_heartbeat_interval.c
index fe0cc046c..8270ee7ea 100644
--- a/tests/i915/sysfs_heartbeat_interval.c
+++ b/tests/i915/sysfs_heartbeat_interval.c
@@ -113,11 +113,11 @@ static void test_invalid(int i915, int engine)
        igt_assert(igt_sysfs_scanf(engine, ATTR, "%u", &saved) == 1);
        igt_debug("Initial %s:%u\n", ATTR, saved);
 
-       igt_sysfs_printf(engine, ATTR, PRIu64, -1);
+       igt_sysfs_printf(engine, ATTR, "%llu", -1ull);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 
-       igt_sysfs_printf(engine, ATTR, PRIu64, 10ull << 32);
+       igt_sysfs_printf(engine, ATTR, "%llu", 10ull << 32);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 }
diff --git a/tests/i915/sysfs_preempt_timeout.c 
b/tests/i915/sysfs_preempt_timeout.c
index 3f4939eed..1642caa44 100644
--- a/tests/i915/sysfs_preempt_timeout.c
+++ b/tests/i915/sysfs_preempt_timeout.c
@@ -103,15 +103,15 @@ static void test_invalid(int i915, int engine)
        igt_assert(igt_sysfs_scanf(engine, ATTR, "%u", &saved) == 1);
        igt_debug("Initial %s:%u\n", ATTR, saved);
 
-       igt_sysfs_printf(engine, ATTR, PRIu64, -1);
+       igt_sysfs_printf(engine, ATTR, "%llu", -1ull);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 
-       igt_sysfs_printf(engine, ATTR, "%d", -1);
+       igt_sysfs_printf(engine, ATTR, "%llu", -1ull);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 
-       igt_sysfs_printf(engine, ATTR, PRIu64, 40ull << 32);
+       igt_sysfs_printf(engine, ATTR, "%llu", 40ull << 32);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 }
diff --git a/tests/i915/sysfs_timeslice_duration.c 
b/tests/i915/sysfs_timeslice_duration.c
index b5b6ded78..fadb07de9 100644
--- a/tests/i915/sysfs_timeslice_duration.c
+++ b/tests/i915/sysfs_timeslice_duration.c
@@ -114,15 +114,15 @@ static void test_invalid(int i915, int engine)
        igt_assert(igt_sysfs_scanf(engine, ATTR, "%u", &saved) == 1);
        igt_debug("Initial %s:%u\n", ATTR, saved);
 
-       igt_sysfs_printf(engine, ATTR, PRIu64, -1);
+       igt_sysfs_printf(engine, ATTR, "%llu", -1ull);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 
-       igt_sysfs_printf(engine, ATTR, "%d", -1);
+       igt_sysfs_printf(engine, ATTR, "%llu", -1ull);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 
-       igt_sysfs_printf(engine, ATTR, PRIu64, 123ull << 32);
+       igt_sysfs_printf(engine, ATTR, "%llu", 123ull << 32);
        igt_sysfs_scanf(engine, ATTR, "%u", &delay);
        igt_assert_eq(delay, saved);
 }
-- 
2.29.2

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