diff mbox series

[v2,06/11] drm/tests: helpers: Create a helper to allocate an atomic state

Message ID 20230720-kms-kunit-actions-rework-v2-6-175017bd56ab@kernel.org
State New
Headers
Series drm: kunit: Switch to kunit actions |

Commit Message

Maxime Ripard July 20, 2023, 11:15 a.m. UTC 
  As we gain more tests, boilerplate to allocate an atomic state and free
it starts to be there more and more as well.

In order to reduce the allocation boilerplate, we can create a helper
to create that atomic state, and call an action when the test is done.
This will also clean up the exit path.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
 drivers/gpu/drm/tests/drm_kunit_helpers.c | 39 +++++++++++++++++++++++++++++++
 include/drm/drm_kunit_helpers.h           |  5 ++++
 2 files changed, 44 insertions(+)

Comments

kernel test robot July 20, 2023, 6:06 p.m. UTC | #1 
Hi Maxime,

kernel test robot noticed the following build warnings:

[auto build test WARNING on c58c49dd89324b18a812762a2bfa5a0458e4f252]

url:    https://github.com/intel-lab-lkp/linux/commits/Maxime-Ripard/drm-tests-helpers-Switch-to-kunit-actions/20230720-191901
base:   c58c49dd89324b18a812762a2bfa5a0458e4f252
patch link:    https://lore.kernel.org/r/20230720-kms-kunit-actions-rework-v2-6-175017bd56ab%40kernel.org
patch subject: [PATCH v2 06/11] drm/tests: helpers: Create a helper to allocate an atomic state
config: arm64-randconfig-r022-20230720 (https://download.01.org/0day-ci/archive/20230721/202307210124.Ur3UNuxZ-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230721/202307210124.Ur3UNuxZ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307210124.Ur3UNuxZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/tests/drm_kunit_helpers.c:54:6: warning: cast from 'void (*)(struct platform_driver *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
      54 |                                         (kunit_action_t *)platform_driver_unregister,
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/tests/drm_kunit_helpers.c:62:6: warning: cast from 'void (*)(struct platform_device *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
      62 |                                         (kunit_action_t *)platform_device_put,
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/tests/drm_kunit_helpers.c:70:6: warning: cast from 'void (*)(struct platform_device *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
      70 |                                         (kunit_action_t *)platform_device_del,
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/tests/drm_kunit_helpers.c:90:9: warning: cast from 'void (*)(struct platform_device *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
      90 |                              (kunit_action_t *)platform_device_unregister,
         |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/tests/drm_kunit_helpers.c:94:9: warning: cast from 'void (*)(struct platform_driver *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
      94 |                              (kunit_action_t *)platform_driver_unregister,
         |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/tests/drm_kunit_helpers.c:192:6: warning: cast from 'void (*)(struct drm_atomic_state *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
     192 |                                         (kunit_action_t *)drm_atomic_state_put,
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   6 warnings generated.


vim +192 drivers/gpu/drm/tests/drm_kunit_helpers.c

   164	
   165	/**
   166	 * drm_kunit_helper_atomic_state_alloc - Allocates an atomic state
   167	 * @test: The test context object
   168	 * @drm: The device to alloc the state for
   169	 * @ctx: Locking context for that atomic update
   170	 *
   171	 * Allocates a empty atomic state.
   172	 *
   173	 * The state is tied to the kunit test context, so we must not call
   174	 * drm_atomic_state_put() on it, it will be done so automatically.
   175	 *
   176	 * Returns:
   177	 * An ERR_PTR on error, a pointer to the newly allocated state otherwise
   178	 */
   179	struct drm_atomic_state *
   180	drm_kunit_helper_atomic_state_alloc(struct kunit *test,
   181					    struct drm_device *drm,
   182					    struct drm_modeset_acquire_ctx *ctx)
   183	{
   184		struct drm_atomic_state *state;
   185		int ret;
   186	
   187		state = drm_atomic_state_alloc(drm);
   188		if (!state)
   189			return ERR_PTR(-ENOMEM);
   190	
   191		ret = kunit_add_action_or_reset(test,
 > 192						(kunit_action_t *)drm_atomic_state_put,
   193						state);
   194		if (ret)
   195			return ERR_PTR(ret);
   196	
   197		state->acquire_ctx = ctx;
   198	
   199		return state;
   200	}
   201	EXPORT_SYMBOL_GPL(drm_kunit_helper_atomic_state_alloc);
   202
diff mbox series

Patch

diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.c b/drivers/gpu/drm/tests/drm_kunit_helpers.c
index 5130d4553262..d3b2c6b48163 100644
--- a/drivers/gpu/drm/tests/drm_kunit_helpers.c
+++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c
@@ -1,5 +1,6 @@ 
 // SPDX-License-Identifier: GPL-2.0
 
+#include <drm/drm_atomic.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_kunit_helpers.h>
 #include <drm/drm_managed.h>
@@ -161,5 +162,43 @@  drm_kunit_helper_acquire_ctx_alloc(struct kunit *test)
 }
 EXPORT_SYMBOL_GPL(drm_kunit_helper_acquire_ctx_alloc);
 
+/**
+ * drm_kunit_helper_atomic_state_alloc - Allocates an atomic state
+ * @test: The test context object
+ * @drm: The device to alloc the state for
+ * @ctx: Locking context for that atomic update
+ *
+ * Allocates a empty atomic state.
+ *
+ * The state is tied to the kunit test context, so we must not call
+ * drm_atomic_state_put() on it, it will be done so automatically.
+ *
+ * Returns:
+ * An ERR_PTR on error, a pointer to the newly allocated state otherwise
+ */
+struct drm_atomic_state *
+drm_kunit_helper_atomic_state_alloc(struct kunit *test,
+				    struct drm_device *drm,
+				    struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_atomic_state *state;
+	int ret;
+
+	state = drm_atomic_state_alloc(drm);
+	if (!state)
+		return ERR_PTR(-ENOMEM);
+
+	ret = kunit_add_action_or_reset(test,
+					(kunit_action_t *)drm_atomic_state_put,
+					state);
+	if (ret)
+		return ERR_PTR(ret);
+
+	state->acquire_ctx = ctx;
+
+	return state;
+}
+EXPORT_SYMBOL_GPL(drm_kunit_helper_atomic_state_alloc);
+
 MODULE_AUTHOR("Maxime Ripard <maxime@cerno.tech>");
 MODULE_LICENSE("GPL");
diff --git a/include/drm/drm_kunit_helpers.h b/include/drm/drm_kunit_helpers.h
index 4ba5e10653c6..514c8a7a32f0 100644
--- a/include/drm/drm_kunit_helpers.h
+++ b/include/drm/drm_kunit_helpers.h
@@ -90,4 +90,9 @@  __drm_kunit_helper_alloc_drm_device(struct kunit *test,
 struct drm_modeset_acquire_ctx *
 drm_kunit_helper_acquire_ctx_alloc(struct kunit *test);
 
+struct drm_atomic_state *
+drm_kunit_helper_atomic_state_alloc(struct kunit *test,
+				    struct drm_device *drm,
+				    struct drm_modeset_acquire_ctx *ctx);
+
 #endif // DRM_KUNIT_HELPERS_H_