drm/xe: skip Kunit tests requiring real hardware when running on UML

Some tests are meant to run only on real hardware. Skip those,
if no device was found.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c
index 49f1f04..b61bde1 100644 (file)
--- a/drivers/gpu/drm/xe/xe_pci.c
+++ b/drivers/gpu/drm/xe/xe_pci.c
@@ -615,16 +615,23 @@ void xe_unregister_pci_driver(void)
 }
 
 #if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST)
-static int dev_to_xe_device_fn(struct device *dev, void *data)
+struct kunit_test_data {
+       int ndevs;
+       xe_device_fn xe_fn;
+};
+
+static int dev_to_xe_device_fn(struct device *dev, void *__data)
 
 {
        struct drm_device *drm = dev_get_drvdata(dev);
-       int (*xe_fn)(struct xe_device *xe) = data;
+       struct kunit_test_data *data = __data;
        int ret = 0;
        int idx;
 
+       data->ndevs++;
+
        if (drm_dev_enter(drm, &idx))
-               ret = xe_fn(to_xe_device(dev_get_drvdata(dev)));
+               ret = data->xe_fn(to_xe_device(dev_get_drvdata(dev)));
        drm_dev_exit(idx);
 
        return ret;
@@ -645,7 +652,18 @@ static int dev_to_xe_device_fn(struct device *dev, void *data)
  */
 int xe_call_for_each_device(xe_device_fn xe_fn)
 {
-       return driver_for_each_device(&xe_pci_driver.driver, NULL,
-                                     xe_fn, dev_to_xe_device_fn);
+       int ret;
+       struct kunit_test_data data = {
+           .xe_fn = xe_fn,
+           .ndevs = 0,
+       };
+
+       ret = driver_for_each_device(&xe_pci_driver.driver, NULL,
+                                    &data, dev_to_xe_device_fn);
+
+       if (!data.ndevs)
+               kunit_skip(current->kunit_test, "test runs only on hardware\n");
+
+       return ret;
 }
 #endif