fpga: tests: use KUnit devices instead of platform devices

KUnit now provides helper functions to create fake devices, so use them
instead of relying on platform devices.

Other changes: remove an unnecessary white space in the fpga region suite.

Reviewed-by: Russ Weight <[e-mail]>
Signed-off-by: Marco Pagani <[e-mail]>
Acked-by: Xu Yilun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Xu Yilun <[e-mail]>

drivers/fpga/tests/fpga-bridge-test.c

···
  * Author: Marco Pagani <[e-mail]>
  */
 
+#include <kunit/device.h>
 #include <kunit/test.h>
-#include <linux/device.h>
 #include <linux/fpga/fpga-bridge.h>
 #include <linux/module.h>
 #include <linux/types.h>
···
 
 struct bridge_ctx {
 	struct fpga_bridge *bridge;
-	struct platform_device *pdev;
+	struct device *dev;
 	struct bridge_stats stats;
 };
 
···
 /**
  * register_test_bridge() - Register a fake FPGA bridge for testing.
  * @test: KUnit test context object.
+ * @dev_name: name of the kunit device to be registered
  *
  * Return: Context of the newly registered FPGA bridge.
  */
-static struct bridge_ctx *register_test_bridge(struct kunit *test)
+static struct bridge_ctx *register_test_bridge(struct kunit *test, const char *dev_name)
 {
 	struct bridge_ctx *ctx;
 
 	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
 
-	ctx->pdev = platform_device_register_simple("bridge_pdev", PLATFORM_DEVID_AUTO, NULL, 0);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->pdev);
+	ctx->dev = kunit_device_register(test, dev_name);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->dev);
 
-	ctx->bridge = fpga_bridge_register(&ctx->pdev->dev, "Fake FPGA bridge", &fake_bridge_ops,
+	ctx->bridge = fpga_bridge_register(ctx->dev, "Fake FPGA bridge", &fake_bridge_ops,
 					   &ctx->stats);
 	KUNIT_ASSERT_FALSE(test, IS_ERR_OR_NULL(ctx->bridge));
 
 	return ctx;
 }
 
-static void unregister_test_bridge(struct bridge_ctx *ctx)
+static void unregister_test_bridge(struct kunit *test, struct bridge_ctx *ctx)
 {
 	fpga_bridge_unregister(ctx->bridge);
-	platform_device_unregister(ctx->pdev);
+	kunit_device_unregister(test, ctx->dev);
 }
 
 static void fpga_bridge_test_get(struct kunit *test)
···
 	struct bridge_ctx *ctx = test->priv;
 	struct fpga_bridge *bridge;
 
-	bridge = fpga_bridge_get(&ctx->pdev->dev, NULL);
+	bridge = fpga_bridge_get(ctx->dev, NULL);
 	KUNIT_EXPECT_PTR_EQ(test, bridge, ctx->bridge);
 
-	bridge = fpga_bridge_get(&ctx->pdev->dev, NULL);
+	bridge = fpga_bridge_get(ctx->dev, NULL);
 	KUNIT_EXPECT_EQ(test, PTR_ERR(bridge), -EBUSY);
 
 	fpga_bridge_put(ctx->bridge);
···
 	int ret;
 
 	ctx_0 = test->priv;
-	ctx_1 = register_test_bridge(test);
+	ctx_1 = register_test_bridge(test, "fpga-bridge-test-dev-1");
 
 	INIT_LIST_HEAD(&bridge_list);
 
 	/* Get bridge 0 and add it to the list */
-	ret = fpga_bridge_get_to_list(&ctx_0->pdev->dev, NULL, &bridge_list);
+	ret = fpga_bridge_get_to_list(ctx_0->dev, NULL, &bridge_list);
 	KUNIT_EXPECT_EQ(test, ret, 0);
 
 	KUNIT_EXPECT_PTR_EQ(test, ctx_0->bridge,
 			    list_first_entry_or_null(&bridge_list, struct fpga_bridge, node));
 
 	/* Get bridge 1 and add it to the list */
-	ret = fpga_bridge_get_to_list(&ctx_1->pdev->dev, NULL, &bridge_list);
+	ret = fpga_bridge_get_to_list(ctx_1->dev, NULL, &bridge_list);
 	KUNIT_EXPECT_EQ(test, ret, 0);
 
 	KUNIT_EXPECT_PTR_EQ(test, ctx_1->bridge,
···
 
 	KUNIT_EXPECT_TRUE(test, list_empty(&bridge_list));
 
-	unregister_test_bridge(ctx_1);
+	unregister_test_bridge(test, ctx_1);
 }
 
 static int fpga_bridge_test_init(struct kunit *test)
 {
-	test->priv = register_test_bridge(test);
+	test->priv = register_test_bridge(test, "fpga-bridge-test-dev-0");
 
 	return 0;
 }
 
 static void fpga_bridge_test_exit(struct kunit *test)
 {
-	unregister_test_bridge(test->priv);
+	unregister_test_bridge(test, test->priv);
 }
 
 static struct kunit_case fpga_bridge_test_cases[] = {

drivers/fpga/tests/fpga-mgr-test.c

···
  * Author: Marco Pagani <[e-mail]>
  */
 
+#include <kunit/device.h>
 #include <kunit/test.h>
-#include <linux/device.h>
 #include <linux/fpga/fpga-mgr.h>
 #include <linux/module.h>
 #include <linux/scatterlist.h>
···
 struct mgr_ctx {
 	struct fpga_image_info *img_info;
 	struct fpga_manager *mgr;
-	struct platform_device *pdev;
+	struct device *dev;
 	struct mgr_stats stats;
 };
 
···
 	struct mgr_ctx *ctx = test->priv;
 	struct fpga_manager *mgr;
 
-	mgr = fpga_mgr_get(&ctx->pdev->dev);
+	mgr = fpga_mgr_get(ctx->dev);
 	KUNIT_EXPECT_PTR_EQ(test, mgr, ctx->mgr);
 
 	fpga_mgr_put(ctx->mgr);
···
 	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
 
-	ctx->pdev = platform_device_register_simple("mgr_pdev", PLATFORM_DEVID_AUTO, NULL, 0);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->pdev);
+	ctx->dev = kunit_device_register(test, "fpga-manager-test-dev");
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->dev);
 
-	ctx->mgr = devm_fpga_mgr_register(&ctx->pdev->dev, "Fake FPGA Manager", &fake_mgr_ops,
+	ctx->mgr = devm_fpga_mgr_register(ctx->dev, "Fake FPGA Manager", &fake_mgr_ops,
 					  &ctx->stats);
 	KUNIT_ASSERT_FALSE(test, IS_ERR_OR_NULL(ctx->mgr));
 
-	ctx->img_info = fpga_image_info_alloc(&ctx->pdev->dev);
+	ctx->img_info = fpga_image_info_alloc(ctx->dev);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->img_info);
 
 	test->priv = ctx;
···
 	struct mgr_ctx *ctx = test->priv;
 
 	fpga_image_info_free(ctx->img_info);
-	platform_device_unregister(ctx->pdev);
+	kunit_device_unregister(test, ctx->dev);
 }
 
 static struct kunit_case fpga_mgr_test_cases[] = {

drivers/fpga/tests/fpga-region-test.c

···
  * Author: Marco Pagani <[e-mail]>
  */
 
+#include <kunit/device.h>
 #include <kunit/test.h>
 #include <linux/fpga/fpga-bridge.h>
 #include <linux/fpga/fpga-mgr.h>
 #include <linux/fpga/fpga-region.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
 #include <linux/types.h>
 
 struct mgr_stats {
···
 
 struct test_ctx {
 	struct fpga_manager *mgr;
-	struct platform_device *mgr_pdev;
+	struct device *mgr_dev;
 	struct fpga_bridge *bridge;
-	struct platform_device *bridge_pdev;
+	struct device *bridge_dev;
 	struct fpga_region *region;
-	struct platform_device *region_pdev;
+	struct device *region_dev;
 	struct bridge_stats bridge_stats;
 	struct mgr_stats mgr_stats;
 };
···
 	struct test_ctx *ctx = test->priv;
 	struct fpga_region *region;
 
-	region = fpga_region_class_find(NULL, &ctx->region_pdev->dev, fake_region_match);
+	region = fpga_region_class_find(NULL, ctx->region_dev, fake_region_match);
 	KUNIT_EXPECT_PTR_EQ(test, region, ctx->region);
 
 	put_device(&region->dev);
···
 	char img_buf[4];
 	int ret;
 
-	img_info = fpga_image_info_alloc(&ctx->mgr_pdev->dev);
+	img_info = fpga_image_info_alloc(ctx->mgr_dev);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_info);
 
 	img_info->buf = img_buf;
···
 	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
 
-	ctx->mgr_pdev = platform_device_register_simple("mgr_pdev", PLATFORM_DEVID_AUTO, NULL, 0);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->mgr_pdev);
+	ctx->mgr_dev = kunit_device_register(test, "fpga-manager-test-dev");
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->mgr_dev);
 
-	ctx->mgr = devm_fpga_mgr_register(&ctx->mgr_pdev->dev, "Fake FPGA Manager", &fake_mgr_ops,
-					  &ctx->mgr_stats);
+	ctx->mgr = devm_fpga_mgr_register(ctx->mgr_dev, "Fake FPGA Manager",
+					  &fake_mgr_ops, &ctx->mgr_stats);
 	KUNIT_ASSERT_FALSE(test, IS_ERR_OR_NULL(ctx->mgr));
 
-	ctx->bridge_pdev = platform_device_register_simple("bridge_pdev", PLATFORM_DEVID_AUTO,
-							   NULL, 0);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->bridge_pdev);
+	ctx->bridge_dev = kunit_device_register(test, "fpga-bridge-test-dev");
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->bridge_dev);
 
-	ctx->bridge = fpga_bridge_register(&ctx->bridge_pdev->dev, "Fake FPGA Bridge",
+	ctx->bridge = fpga_bridge_register(ctx->bridge_dev, "Fake FPGA Bridge",
 					   &fake_bridge_ops, &ctx->bridge_stats);
 	KUNIT_ASSERT_FALSE(test, IS_ERR_OR_NULL(ctx->bridge));
 
 	ctx->bridge_stats.enable = true;
 
-	ctx->region_pdev = platform_device_register_simple("region_pdev", PLATFORM_DEVID_AUTO,
-							   NULL, 0);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->region_pdev);
+	ctx->region_dev = kunit_device_register(test, "fpga-region-test-dev");
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->region_dev);
 
 	region_info.mgr = ctx->mgr;
 	region_info.priv = ctx->bridge;
 	region_info.get_bridges = fake_region_get_bridges;
 
-	ctx->region = fpga_region_register_full(&ctx->region_pdev->dev, &region_info);
+	ctx->region = fpga_region_register_full(ctx->region_dev, &region_info);
 	KUNIT_ASSERT_FALSE(test, IS_ERR_OR_NULL(ctx->region));
 
 	test->priv = ctx;
···
 	struct test_ctx *ctx = test->priv;
 
 	fpga_region_unregister(ctx->region);
-	platform_device_unregister(ctx->region_pdev);
+	kunit_device_unregister(test, ctx->region_dev);
 
 	fpga_bridge_unregister(ctx->bridge);
-	platform_device_unregister(ctx->bridge_pdev);
+	kunit_device_unregister(test, ctx->bridge_dev);
 
-	platform_device_unregister(ctx->mgr_pdev);
+	kunit_device_unregister(test, ctx->mgr_dev);
 }
 
 static struct kunit_case fpga_region_test_cases[] = {
 	KUNIT_CASE(fpga_region_test_class_find),
 	KUNIT_CASE(fpga_region_test_program_fpga),
-
 	{}
 };