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diff --git a/sys/compat/linuxkpi/common/include/linux/mfd/core.h b/sys/compat/linuxkpi/common/include/linux/mfd/core.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/mfd/core.h
@@ -0,0 +1,49 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2026 The FreeBSD Foundation
+ */
+
+#ifndef _LINUXKPI_LINUX_MFD_CORE_H_
+#define _LINUXKPI_LINUX_MFD_CORE_H_
+
+#include <linux/platform_device.h>
+
+/*
+ * <linux/ioport.h> is not included by Linux, but we need it here to get the
+ * definition of `struct resource`.
+ *
+ * At least the amdgpu DRM driver (amdgpu_isp.c at the time of this writing)
+ * needs the structure without including this header: it relies on an implicit
+ * include of <linux/ioport.h> from <linux/pci.h>, which we can't have due to
+ * conflict with the FreeBSD native `struct resource`.
+ */
+#include <linux/ioport.h>
+
+#include <linux/kernel.h> /* pr_debug */
+
+struct resource;
+struct mfd_cell {
+ const char *name;
+ void *platform_data;
+ size_t pdata_size;
+ int num_resources;
+ const struct resource *resources;
+};
+
+static inline int
+mfd_add_hotplug_devices(struct device *parent,
+ const struct mfd_cell *cells, int n_devs)
+{
+ pr_debug("%s: TODO\n", __func__);
+
+ return (0);
+}
+
+static inline void
+mfd_remove_devices(struct device *parent)
+{
+ pr_debug("%s: TODO\n", __func__);
+}
+
+#endif /* _LINUXKPI_LINUX_MFD_CORE_H_ */
diff --git a/sys/compat/linuxkpi/dummy/include/linux/mfd/core.h b/sys/compat/linuxkpi/dummy/include/linux/mfd/core.h
deleted file mode 100644

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