Merge branch 'next' into for-linus

Prepare input updates for 6.14 merge window.

6 files changed, 228 insertions, 5 deletions

diff --git a/include/kunit/clk.h b/include/kunit/clk.h
new file mode 100644
index 000000000000..0afae7688157
--- /dev/null
+++ b/include/kunit/clk.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _CLK_KUNIT_H
+#define _CLK_KUNIT_H
+
+struct clk;
+struct clk_hw;
+struct device;
+struct device_node;
+struct kunit;
+
+struct clk *
+clk_get_kunit(struct kunit *test, struct device *dev, const char *con_id);
+struct clk *
+of_clk_get_kunit(struct kunit *test, struct device_node *np, int index);
+
+struct clk *
+clk_hw_get_clk_kunit(struct kunit *test, struct clk_hw *hw, const char *con_id);
+struct clk *
+clk_hw_get_clk_prepared_enabled_kunit(struct kunit *test, struct clk_hw *hw,
+				      const char *con_id);
+
+int clk_prepare_enable_kunit(struct kunit *test, struct clk *clk);
+
+int clk_hw_register_kunit(struct kunit *test, struct device *dev, struct clk_hw *hw);
+int of_clk_hw_register_kunit(struct kunit *test, struct device_node *node,
+			     struct clk_hw *hw);
+
+int of_clk_add_hw_provider_kunit(struct kunit *test, struct device_node *np,
+				 struct clk_hw *(*get)(struct of_phandle_args *clkspec, void *data),
+				 void *data);
+
+#endif
diff --git a/include/kunit/of.h b/include/kunit/of.h
new file mode 100644
index 000000000000..75a760a4e2a5
--- /dev/null
+++ b/include/kunit/of.h
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _KUNIT_OF_H
+#define _KUNIT_OF_H
+
+#include <kunit/test.h>
+
+struct device_node;
+
+#ifdef CONFIG_OF
+
+void of_node_put_kunit(struct kunit *test, struct device_node *node);
+
+#else
+
+static inline
+void of_node_put_kunit(struct kunit *test, struct device_node *node)
+{
+	kunit_skip(test, "requires CONFIG_OF");
+}
+
+#endif /* !CONFIG_OF */
+
+#if defined(CONFIG_OF) && defined(CONFIG_OF_OVERLAY) && defined(CONFIG_OF_EARLY_FLATTREE)
+
+int of_overlay_fdt_apply_kunit(struct kunit *test, void *overlay_fdt,
+			       u32 overlay_fdt_size, int *ovcs_id);
+#else
+
+static inline int
+of_overlay_fdt_apply_kunit(struct kunit *test, void *overlay_fdt,
+			   u32 overlay_fdt_size, int *ovcs_id)
+{
+	kunit_skip(test, "requires CONFIG_OF and CONFIG_OF_OVERLAY and CONFIG_OF_EARLY_FLATTREE for root node");
+	return -EINVAL;
+}
+
+#endif
+
+/**
+ * __of_overlay_apply_kunit() - Test managed of_overlay_fdt_apply() variant
+ * @test: test context
+ * @overlay_begin: start address of overlay to apply
+ * @overlay_end: end address of overlay to apply
+ *
+ * This is mostly internal API. See of_overlay_apply_kunit() for the wrapper
+ * that makes this easier to use.
+ *
+ * Similar to of_overlay_fdt_apply(), except the overlay is managed by the test
+ * case and is automatically removed with of_overlay_remove() after the test
+ * case concludes.
+ *
+ * Return: 0 on success, negative errno on failure
+ */
+static inline int __of_overlay_apply_kunit(struct kunit *test,
+					   u8 *overlay_begin,
+					   const u8 *overlay_end)
+{
+	int unused;
+
+	return of_overlay_fdt_apply_kunit(test, overlay_begin,
+					  overlay_end - overlay_begin,
+					  &unused);
+}
+
+#define of_overlay_begin(overlay_name) __dtbo_##overlay_name##_begin
+#define of_overlay_end(overlay_name) __dtbo_##overlay_name##_end
+
+#define OF_OVERLAY_DECLARE(overlay_name)			\
+	extern uint8_t of_overlay_begin(overlay_name)[];	\
+	extern uint8_t of_overlay_end(overlay_name)[]		\
+
+/**
+ * of_overlay_apply_kunit() - Test managed of_overlay_fdt_apply() for built-in overlays
+ * @test: test context
+ * @overlay_name: name of overlay to apply
+ *
+ * This macro is used to apply a device tree overlay built with the
+ * cmd_dt_S_dtbo rule in scripts/Makefile.lib that has been compiled into the
+ * kernel image or KUnit test module. The overlay is automatically removed when
+ * the test is finished.
+ *
+ * Unit tests that need device tree nodes should compile an overlay file with
+ * @overlay_name\.dtbo.o in their Makefile along with their unit test and then
+ * load the overlay during their test. The @overlay_name matches the filename
+ * of the overlay without the dtbo filename extension. If CONFIG_OF_OVERLAY is
+ * not enabled, the @test will be skipped.
+ *
+ * In the Makefile
+ *
+ * .. code-block:: none
+ *
+ *	obj-$(CONFIG_OF_OVERLAY_KUNIT_TEST) += overlay_test.o kunit_overlay_test.dtbo.o
+ *
+ * In the test
+ *
+ * .. code-block:: c
+ *
+ *	static void of_overlay_kunit_of_overlay_apply(struct kunit *test)
+ *	{
+ *		struct device_node *np;
+ *
+ *		KUNIT_ASSERT_EQ(test, 0,
+ *				of_overlay_apply_kunit(test, kunit_overlay_test));
+ *
+ *		np = of_find_node_by_name(NULL, "test-kunit");
+ *		KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np);
+ *		of_node_put(np);
+ *	}
+ *
+ * Return: 0 on success, negative errno on failure.
+ */
+#define of_overlay_apply_kunit(test, overlay_name)		\
+({								\
+	OF_OVERLAY_DECLARE(overlay_name);			\
+								\
+	__of_overlay_apply_kunit((test),			\
+			of_overlay_begin(overlay_name),		\
+			of_overlay_end(overlay_name));		\
+})
+
+#endif
diff --git a/include/kunit/platform_device.h b/include/kunit/platform_device.h
new file mode 100644
index 000000000000..0fc0999d2420
--- /dev/null
+++ b/include/kunit/platform_device.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _KUNIT_PLATFORM_DRIVER_H
+#define _KUNIT_PLATFORM_DRIVER_H
+
+struct kunit;
+struct platform_device;
+struct platform_driver;
+
+struct platform_device *
+kunit_platform_device_alloc(struct kunit *test, const char *name, int id);
+int kunit_platform_device_add(struct kunit *test, struct platform_device *pdev);
+
+int kunit_platform_device_prepare_wait_for_probe(struct kunit *test,
+						 struct platform_device *pdev,
+						 struct completion *x);
+
+int kunit_platform_driver_register(struct kunit *test,
+				   struct platform_driver *drv);
+
+#endif
diff --git a/include/kunit/skbuff.h b/include/kunit/skbuff.h
index 44d12370939a..07784694357c 100644
--- a/include/kunit/skbuff.h
+++ b/include/kunit/skbuff.h
@@ -20,8 +20,9 @@ static void kunit_action_kfree_skb(void *p)
  * kunit_zalloc_skb() - Allocate and initialize a resource managed skb.
  * @test: The test case to which the skb belongs
  * @len: size to allocate
+ * @gfp: allocation flags
  *
- * Allocate a new struct sk_buff with GFP_KERNEL, zero fill the give length
+ * Allocate a new struct sk_buff with gfp flags, zero fill the given length
  * and add it as a resource to the kunit test for automatic cleanup.
  *
  * Returns: newly allocated SKB, or %NULL on error
@@ -29,7 +30,7 @@ static void kunit_action_kfree_skb(void *p)
 static inline struct sk_buff *kunit_zalloc_skb(struct kunit *test, int len,
 					       gfp_t gfp)
 {
-	struct sk_buff *res = alloc_skb(len, GFP_KERNEL);
+	struct sk_buff *res = alloc_skb(len, gfp);
 
 	if (!res || skb_pad(res, len))
 		return NULL;
diff --git a/include/kunit/test.h b/include/kunit/test.h
index e2a1f0928e8b..34b71e42fb10 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -28,6 +28,7 @@
 #include <linux/types.h>
 
 #include <asm/rwonce.h>
+#include <asm/sections.h>
 
 /* Static key: true if any KUnit tests are currently running */
 DECLARE_STATIC_KEY_FALSE(kunit_running);
@@ -480,6 +481,54 @@ static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp
 	return kunit_kmalloc_array(test, n, size, gfp | __GFP_ZERO);
 }
 
+
+/**
+ * kunit_kfree_const() - conditionally free test managed memory
+ * @test: The test context object.
+ * @x: pointer to the memory
+ *
+ * Calls kunit_kfree() only if @x is not in .rodata section.
+ * See kunit_kstrdup_const() for more information.
+ */
+void kunit_kfree_const(struct kunit *test, const void *x);
+
+/**
+ * kunit_kstrdup() - Duplicates a string into a test managed allocation.
+ *
+ * @test: The test context object.
+ * @str: The NULL-terminated string to duplicate.
+ * @gfp: flags passed to underlying kmalloc().
+ *
+ * See kstrdup() and kunit_kmalloc_array() for more information.
+ */
+static inline char *kunit_kstrdup(struct kunit *test, const char *str, gfp_t gfp)
+{
+	size_t len;
+	char *buf;
+
+	if (!str)
+		return NULL;
+
+	len = strlen(str) + 1;
+	buf = kunit_kmalloc(test, len, gfp);
+	if (buf)
+		memcpy(buf, str, len);
+	return buf;
+}
+
+/**
+ * kunit_kstrdup_const() - Conditionally duplicates a string into a test managed allocation.
+ *
+ * @test: The test context object.
+ * @str: The NULL-terminated string to duplicate.
+ * @gfp: flags passed to underlying kmalloc().
+ *
+ * Calls kunit_kstrdup() only if @str is not in the rodata section. Must be freed with
+ * kunit_kfree_const() -- not kunit_kfree().
+ * See kstrdup_const() and kunit_kmalloc_array() for more information.
+ */
+const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp);
+
 /**
  * kunit_vm_mmap() - Allocate KUnit-tracked vm_mmap() area
  * @test: The test context object.
diff --git a/include/kunit/visibility.h b/include/kunit/visibility.h
index 0dfe35feeec6..7c34c8ffcf3b 100644
--- a/include/kunit/visibility.h
+++ b/include/kunit/visibility.h
@@ -20,11 +20,11 @@
     /**
      * EXPORT_SYMBOL_IF_KUNIT(symbol) - Exports symbol into
      * EXPORTED_FOR_KUNIT_TESTING namespace only if CONFIG_KUNIT is
-     * enabled. Must use MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING)
+     * enabled. Must use MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING")
      * in test file in order to use symbols.
+     * @symbol: the symbol identifier to export
      */
-    #define EXPORT_SYMBOL_IF_KUNIT(symbol) EXPORT_SYMBOL_NS(symbol, \
-	    EXPORTED_FOR_KUNIT_TESTING)
+    #define EXPORT_SYMBOL_IF_KUNIT(symbol) EXPORT_SYMBOL_NS(symbol, "EXPORTED_FOR_KUNIT_TESTING")
 #else
     #define VISIBLE_IF_KUNIT static
     #define EXPORT_SYMBOL_IF_KUNIT(symbol)