Even if all device file descriptors are closed on device hotunplug,
PRIME exported objects may still exists, referenced by still open
dma-buf file handles. Add a subtest that keeps such handle open on
device hotunplug.
v2: rebase on upstream
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@xxxxxxxxxxxxxxx>
---
tests/core_hotunplug.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/tests/core_hotunplug.c b/tests/core_hotunplug.c
index c30d98a69..7cb699cc2 100644
--- a/tests/core_hotunplug.c
+++ b/tests/core_hotunplug.c
@@ -379,6 +379,35 @@ static void gem_hotunplug_lateclose(void)
healthcheck();
}
+static void prime_hotunplug_lateclose(void)
+{
+ struct hotunplug priv;
+ uint32_t handle;
+ int dmabuf;
+
+ prepare_for_rescan(&priv);
+
+ igt_require_gem(priv.fd.drm);
+
+ local_debug("creating and PRIME-exporting a GEM object");
+ handle = gem_create(priv.fd.drm, 4096);
+ dmabuf = prime_handle_to_fd(priv.fd.drm, handle);
+
+ local_debug("closing the device");
+ close(priv.fd.drm);
+
+ local_debug("hot unplugging the device");
+ device_unplug(priv.fd.sysfs_dev);
+
+ local_debug("late closing the PRIME file handle");
+ close(dmabuf);
+
+ local_debug("recovering the device");
+ bus_rescan(priv.fd.sysfs_bus);
+
+ healthcheck();
+}
+
/* Main */
igt_main
@@ -465,4 +494,11 @@ igt_main
igt_fixture
igt_abort_on_f(failure, "%s\n", failure);
+
+ igt_describe("Check if a device with a still open PRIME-exported object can be cleanly unplugged, then released and recovered");
+ igt_subtest("prime-hotunplug-lateclose")
+ prime_hotunplug_lateclose();
+
+ igt_fixture
+ igt_abort_on_f(failure, "%s\n", failure);
}
--
2.21.1
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