diff options
| -rw-r--r-- | drivers/gpu/drm/vkms/tests/vkms_config_test.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_config.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_config.h | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_output.c | 3 |
4 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vkms/tests/vkms_config_test.c b/drivers/gpu/drm/vkms/tests/vkms_config_test.c index 92798590051b..6e07139d261c 100644 --- a/drivers/gpu/drm/vkms/tests/vkms_config_test.c +++ b/drivers/gpu/drm/vkms/tests/vkms_config_test.c @@ -54,6 +54,8 @@ static void vkms_config_test_default_config(struct kunit *test) KUNIT_EXPECT_EQ(test, config->writeback, params->enable_writeback); KUNIT_EXPECT_EQ(test, config->overlay, params->enable_overlay); + KUNIT_EXPECT_TRUE(test, vkms_config_is_valid(config)); + vkms_config_destroy(config); } diff --git a/drivers/gpu/drm/vkms/vkms_config.c b/drivers/gpu/drm/vkms/vkms_config.c index 9fb08d94a351..d1947537834c 100644 --- a/drivers/gpu/drm/vkms/vkms_config.c +++ b/drivers/gpu/drm/vkms/vkms_config.c @@ -51,6 +51,12 @@ void vkms_config_destroy(struct vkms_config *config) } EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy); +bool vkms_config_is_valid(const struct vkms_config *config) +{ + return true; +} +EXPORT_SYMBOL_IF_KUNIT(vkms_config_is_valid); + static int vkms_config_show(struct seq_file *m, void *data) { struct drm_debugfs_entry *entry = m->private; diff --git a/drivers/gpu/drm/vkms/vkms_config.h b/drivers/gpu/drm/vkms/vkms_config.h index fcaa909fb2e0..31c758631c37 100644 --- a/drivers/gpu/drm/vkms/vkms_config.h +++ b/drivers/gpu/drm/vkms/vkms_config.h @@ -68,6 +68,16 @@ vkms_config_get_device_name(struct vkms_config *config) } /** + * vkms_config_is_valid() - Validate a configuration + * @config: Configuration to validate + * + * Returns: + * Whether the configuration is valid or not. + * For example, a configuration without primary planes is not valid. + */ +bool vkms_config_is_valid(const struct vkms_config *config); + +/** * vkms_config_register_debugfs() - Register a debugfs file to show the device's * configuration * @vkms_device: Device to register diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c index 068a7f87ecec..414cc933af41 100644 --- a/drivers/gpu/drm/vkms/vkms_output.c +++ b/drivers/gpu/drm/vkms/vkms_output.c @@ -16,6 +16,9 @@ int vkms_output_init(struct vkms_device *vkmsdev) int writeback; unsigned int n; + if (!vkms_config_is_valid(vkmsdev->config)) + return -EINVAL; + /* * Initialize used plane. One primary plane is required to perform the composition. * |