disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/iova.h
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@@ -1,11 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (c) 2006, Intel Corporation.
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  *
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- * This file is released under the GPLv2.
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- *
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  * Copyright (C) 2006-2008 Intel Corporation
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  * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
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- *
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  */
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 #ifndef _IOVA_H_
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@@ -74,8 +72,16 @@
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 	struct rb_node	*cached32_node; /* Save last 32-bit alloced node */
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 	unsigned long	granule;	/* pfn granularity for this domain */
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 	unsigned long	start_pfn;	/* Lower limit for this domain */
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-	unsigned long	end_pfn;        /* Upper limit for this domain */
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 	unsigned long	dma_32bit_pfn;
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+	unsigned long	max32_alloc_size; /* Size of last failed allocation */
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+	struct iova_fq __percpu *fq;	/* Flush Queue */
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+
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+	atomic64_t	fq_flush_start_cnt;	/* Number of TLB flushes that
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+						   have been started */
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+
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+	atomic64_t	fq_flush_finish_cnt;	/* Number of TLB flushes that
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+						   have been finished */
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+
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 	struct iova	anchor;		/* rbtree lookup anchor */
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 	struct iova_rcache rcaches[IOVA_RANGE_CACHE_MAX_SIZE];	/* IOVA range caches */
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@@ -84,14 +90,6 @@
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 	iova_entry_dtor entry_dtor;	/* IOMMU driver specific destructor for
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 					   iova entry */
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-
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-	struct iova_fq __percpu *fq;	/* Flush Queue */
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-
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-	atomic64_t	fq_flush_start_cnt;	/* Number of TLB flushes that
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-						   have been started */
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-
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-	atomic64_t	fq_flush_finish_cnt;	/* Number of TLB flushes that
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-						   have been finished */
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 	struct timer_list fq_timer;		/* Timer to regularily empty the
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 						   flush-queues */
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@@ -135,7 +133,7 @@
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 	return iova >> iova_shift(iovad);
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 }
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-#if IS_ENABLED(CONFIG_IOMMU_IOVA)
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+#if IS_REACHABLE(CONFIG_IOMMU_IOVA)
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 int iova_cache_get(void);
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 void iova_cache_put(void);
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@@ -166,6 +164,7 @@
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 struct iova *split_and_remove_iova(struct iova_domain *iovad,
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 	struct iova *iova, unsigned long pfn_lo, unsigned long pfn_hi);
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 void free_cpu_cached_iovas(unsigned int cpu, struct iova_domain *iovad);
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+void free_global_cached_iovas(struct iova_domain *iovad);
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 #else
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 static inline int iova_cache_get(void)
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 {
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@@ -273,6 +272,11 @@
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 					 struct iova_domain *iovad)
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 {
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 }
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+
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+static inline void free_global_cached_iovas(struct iova_domain *iovad)
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+{
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+}
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+
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 #endif
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 #endif