If the device cannot handle coherent memory, it will disallow userptr.
Check before use.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2904
Signed-off-by: Chris Wilson <[email protected]>
---
 tests/i915/gem_spin_batch.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/tests/i915/gem_spin_batch.c b/tests/i915/gem_spin_batch.c
index c2ce2373b..2ec278857 100644
--- a/tests/i915/gem_spin_batch.c
+++ b/tests/i915/gem_spin_batch.c
@@ -176,6 +176,25 @@ static void spin_all(int i915, unsigned int flags)
        }
 }
 
+static bool has_userptr(int fd)
+{
+       struct drm_i915_gem_userptr userptr;
+       int err;
+
+       memset(&userptr, 0, sizeof(userptr));
+       userptr.user_size = 8192;
+       userptr.user_ptr = -4096;
+
+       err = 0;
+       if (drmIoctl(fd, DRM_IOCTL_I915_GEM_USERPTR, &userptr)) {
+               err = errno;
+               igt_assume(err);
+       }
+       errno = 0;
+
+       return err == EFAULT;
+}
+
 igt_main
 {
        const struct intel_execution_engine2 *e2;
@@ -235,8 +254,10 @@ igt_main
        igt_subtest("spin-each")
                spin_on_all_engines(fd, 0, 3);
 
-       igt_subtest("user-each")
+       igt_subtest("user-each") {
+               igt_require(has_userptr(fd));
                spin_on_all_engines(fd, IGT_SPIN_USERPTR, 3);
+       }
 
        igt_fixture {
                igt_stop_hang_detector();
-- 
2.30.0

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