Merge branch 'i2c/for-current-fixed' into i2c/for-5.8

77 files changed, 231 insertions, 175 deletions

diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
index 36341dfded70..44ec80e70518 100644
--- a/include/asm-generic/Kbuild
+++ b/include/asm-generic/Kbuild
@@ -56,6 +56,7 @@ mandatory-y += topology.h
 mandatory-y += trace_clock.h
 mandatory-y += uaccess.h
 mandatory-y += unaligned.h
+mandatory-y += vermagic.h
 mandatory-y += vga.h
 mandatory-y += word-at-a-time.h
 mandatory-y += xor.h
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index b3f1082cc435..1c4fd950f091 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -163,7 +163,7 @@ static inline int cpumask_to_vpset(struct hv_vpset *vpset,
 	return nr_bank;
 }
 
-void hyperv_report_panic(struct pt_regs *regs, long err);
+void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die);
 void hyperv_report_panic_msg(phys_addr_t pa, size_t size);
 bool hv_is_hyperv_initialized(void);
 bool hv_is_hibernation_supported(void);
diff --git a/include/asm-generic/vermagic.h b/include/asm-generic/vermagic.h
new file mode 100644
index 000000000000..084274a1219e
--- /dev/null
+++ b/include/asm-generic/vermagic.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _ASM_GENERIC_VERMAGIC_H
+#define _ASM_GENERIC_VERMAGIC_H
+
+#define MODULE_ARCH_VERMAGIC ""
+
+#endif /* _ASM_GENERIC_VERMAGIC_H */
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 4fc87dee005a..ee577a83cfe6 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -54,7 +54,6 @@ enum wb_reason {
 	WB_REASON_SYNC,
 	WB_REASON_PERIODIC,
 	WB_REASON_LAPTOP_TIMER,
-	WB_REASON_FREE_MORE_MEM,
 	WB_REASON_FS_FREE_SPACE,
 	/*
 	 * There is no bdi forker thread any more and works are done
diff --git a/include/linux/bio.h b/include/linux/bio.h
index c1c0f9ea4e63..a0ee494a6329 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -319,7 +319,7 @@ struct bio_integrity_payload {
 	struct work_struct	bip_work;	/* I/O completion */
 
 	struct bio_vec		*bip_vec;
-	struct bio_vec		bip_inline_vecs[0];/* embedded bvec array */
+	struct bio_vec		bip_inline_vecs[];/* embedded bvec array */
 };
 
 #if defined(CONFIG_BLK_DEV_INTEGRITY)
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index f389d7c724bd..b45148ba3291 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -173,7 +173,7 @@ struct blk_mq_hw_ctx {
 	 * blocking (BLK_MQ_F_BLOCKING). Must be the last member - see also
 	 * blk_mq_hw_ctx_size().
 	 */
-	struct srcu_struct	srcu[0];
+	struct srcu_struct	srcu[];
 };
 
 /**
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 70254ae11769..31eb92876be7 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -198,7 +198,7 @@ struct bio {
 	 * double allocations for a small number of bio_vecs. This member
 	 * MUST obviously be kept at the very end of the bio.
 	 */
-	struct bio_vec		bi_inline_vecs[0];
+	struct bio_vec		bi_inline_vecs[];
 };
 
 #define BIO_RESET_BYTES		offsetof(struct bio, bi_max_vecs)
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index e0b020eaf32e..15b765a181b8 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -189,6 +189,8 @@ struct buffer_head *__getblk_gfp(struct block_device *bdev, sector_t block,
 void __brelse(struct buffer_head *);
 void __bforget(struct buffer_head *);
 void __breadahead(struct block_device *, sector_t block, unsigned int size);
+void __breadahead_gfp(struct block_device *, sector_t block, unsigned int size,
+		  gfp_t gfp);
 struct buffer_head *__bread_gfp(struct block_device *,
 				sector_t block, unsigned size, gfp_t gfp);
 void invalidate_bh_lrus(void);
@@ -319,6 +321,12 @@ sb_breadahead(struct super_block *sb, sector_t block)
 	__breadahead(sb->s_bdev, block, sb->s_blocksize);
 }
 
+static inline void
+sb_breadahead_unmovable(struct super_block *sb, sector_t block)
+{
+	__breadahead_gfp(sb->s_bdev, block, sb->s_blocksize, 0);
+}
+
 static inline struct buffer_head *
 sb_getblk(struct super_block *sb, sector_t block)
 {
diff --git a/include/linux/can/dev/peak_canfd.h b/include/linux/can/dev/peak_canfd.h
index 511a37302fea..5fd627e9da19 100644
--- a/include/linux/can/dev/peak_canfd.h
+++ b/include/linux/can/dev/peak_canfd.h
@@ -189,7 +189,7 @@ struct __packed pucan_rx_msg {
 	u8	client;
 	__le16	flags;
 	__le32	can_id;
-	u8	d[0];
+	u8	d[];
 };
 
 /* uCAN error types */
@@ -266,7 +266,7 @@ struct __packed pucan_tx_msg {
 	u8	client;
 	__le16	flags;
 	__le32	can_id;
-	u8	d[0];
+	u8	d[];
 };
 
 /* build the cmd opcode_channel field with respect to the correct endianness */
diff --git a/include/linux/cpu_rmap.h b/include/linux/cpu_rmap.h
index 02edeafcb2bf..be8aea04d023 100644
--- a/include/linux/cpu_rmap.h
+++ b/include/linux/cpu_rmap.h
@@ -28,7 +28,7 @@ struct cpu_rmap {
 	struct {
 		u16	index;
 		u16	dist;
-	}		near[0];
+	}		near[];
 };
 #define CPU_RMAP_DIST_INF 0xffff
 
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index a274d95fa66e..63cb3606dea7 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -103,8 +103,8 @@ void debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent,
 		       u8 *value);
 void debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent,
 			u16 *value);
-struct dentry *debugfs_create_u32(const char *name, umode_t mode,
-				  struct dentry *parent, u32 *value);
+void debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent,
+			u32 *value);
 void debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent,
 			u64 *value);
 struct dentry *debugfs_create_ulong(const char *name, umode_t mode,
@@ -250,12 +250,8 @@ static inline void debugfs_create_u8(const char *name, umode_t mode,
 static inline void debugfs_create_u16(const char *name, umode_t mode,
 				      struct dentry *parent, u16 *value) { }
 
-static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode,
-						struct dentry *parent,
-						u32 *value)
-{
-	return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u32(const char *name, umode_t mode,
+				      struct dentry *parent, u32 *value) { }
 
 static inline void debugfs_create_u64(const char *name, umode_t mode,
 				      struct dentry *parent, u64 *value) { }
diff --git a/include/linux/digsig.h b/include/linux/digsig.h
index 594fc66a395a..2ace69e41088 100644
--- a/include/linux/digsig.h
+++ b/include/linux/digsig.h
@@ -29,7 +29,7 @@ struct pubkey_hdr {
 	uint32_t	timestamp;	/* key made, always 0 for now */
 	uint8_t		algo;
 	uint8_t		nmpi;
-	char		mpi[0];
+	char		mpi[];
 } __packed;
 
 struct signature_hdr {
@@ -39,7 +39,7 @@ struct signature_hdr {
 	uint8_t		hash;
 	uint8_t		keyid[8];
 	uint8_t		nmpi;
-	char		mpi[0];
+	char		mpi[];
 } __packed;
 
 #if defined(CONFIG_SIGNATURE) || defined(CONFIG_SIGNATURE_MODULE)
diff --git a/include/linux/dirent.h b/include/linux/dirent.h
index fc61f3cff72f..99002220cd45 100644
--- a/include/linux/dirent.h
+++ b/include/linux/dirent.h
@@ -7,7 +7,7 @@ struct linux_dirent64 {
 	s64		d_off;
 	unsigned short	d_reclen;
 	unsigned char	d_type;
-	char		d_name[0];
+	char		d_name[];
 };
 
 #endif
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 1ade486fc2bb..57bcef6f988a 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -329,13 +329,12 @@ struct dma_buf {
 
 /**
  * struct dma_buf_attach_ops - importer operations for an attachment
- * @move_notify: [optional] notification that the DMA-buf is moving
  *
  * Attachment operations implemented by the importer.
  */
 struct dma_buf_attach_ops {
 	/**
-	 * @move_notify
+	 * @move_notify: [optional] notification that the DMA-buf is moving
 	 *
 	 * If this callback is provided the framework can avoid pinning the
 	 * backing store while mappings exists.
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 21065c04c4ac..e1c03339918f 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -83,9 +83,9 @@ enum dma_transfer_direction {
 /**
  * Interleaved Transfer Request
  * ----------------------------
- * A chunk is collection of contiguous bytes to be transfered.
+ * A chunk is collection of contiguous bytes to be transferred.
  * The gap(in bytes) between two chunks is called inter-chunk-gap(ICG).
- * ICGs may or maynot change between chunks.
+ * ICGs may or may not change between chunks.
  * A FRAME is the smallest series of contiguous {chunk,icg} pairs,
  *  that when repeated an integral number of times, specifies the transfer.
  * A transfer template is specification of a Frame, the number of times
@@ -341,13 +341,11 @@ struct dma_chan {
  * @chan: driver channel device
  * @device: sysfs device
  * @dev_id: parent dma_device dev_id
- * @idr_ref: reference count to gate release of dma_device dev_id
  */
 struct dma_chan_dev {
 	struct dma_chan *chan;
 	struct device device;
 	int dev_id;
-	atomic_t *idr_ref;
 };
 
 /**
@@ -835,6 +833,8 @@ struct dma_device {
 	int dev_id;
 	struct device *dev;
 	struct module *owner;
+	struct ida chan_ida;
+	struct mutex chan_mutex;	/* to protect chan_ida */
 
 	u32 src_addr_widths;
 	u32 dst_addr_widths;
@@ -1069,7 +1069,7 @@ static inline int dmaengine_terminate_all(struct dma_chan *chan)
  * dmaengine_synchronize() needs to be called before it is safe to free
  * any memory that is accessed by previously submitted descriptors or before
  * freeing any resources accessed from within the completion callback of any
- * perviously submitted descriptors.
+ * previously submitted descriptors.
  *
  * This function can be called from atomic context as well as from within a
  * complete callback of a descriptor submitted on the same channel.
@@ -1091,7 +1091,7 @@ static inline int dmaengine_terminate_async(struct dma_chan *chan)
  *
  * Synchronizes to the DMA channel termination to the current context. When this
  * function returns it is guaranteed that all transfers for previously issued
- * descriptors have stopped and and it is safe to free the memory assoicated
+ * descriptors have stopped and it is safe to free the memory associated
  * with them. Furthermore it is guaranteed that all complete callback functions
  * for a previously submitted descriptor have finished running and it is safe to
  * free resources accessed from within the complete callbacks.
diff --git a/include/linux/enclosure.h b/include/linux/enclosure.h
index 564e96f625ff..1c630e2c2756 100644
--- a/include/linux/enclosure.h
+++ b/include/linux/enclosure.h
@@ -101,7 +101,7 @@ struct enclosure_device {
 	struct device edev;
 	struct enclosure_component_callbacks *cb;
 	int components;
-	struct enclosure_component component[0];
+	struct enclosure_component component[];
 };
 
 static inline struct enclosure_device *
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index d249b88a4d5a..ade6486a3382 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -36,7 +36,7 @@ struct em_cap_state {
 struct em_perf_domain {
 	struct em_cap_state *table;
 	int nr_cap_states;
-	unsigned long cpus[0];
+	unsigned long cpus[];
 };
 
 #ifdef CONFIG_ENERGY_MODEL
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index c1d379bf6ee1..a23b26eab479 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -35,7 +35,7 @@ struct compat_ethtool_rxnfc {
 	compat_u64			data;
 	struct compat_ethtool_rx_flow_spec fs;
 	u32				rule_cnt;
-	u32				rule_locs[0];
+	u32				rule_locs[];
 };
 
 #endif /* CONFIG_COMPAT */
@@ -462,7 +462,7 @@ int ethtool_check_ops(const struct ethtool_ops *ops);
 
 struct ethtool_rx_flow_rule {
 	struct flow_rule	*rule;
-	unsigned long		priv[0];
+	unsigned long		priv[];
 };
 
 struct ethtool_rx_flow_spec_input {
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 5b14a0f38124..0bd581003cd5 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -76,7 +76,7 @@ struct gen_pool_chunk {
 	void *owner;			/* private data to retrieve at alloc time */
 	unsigned long start_addr;	/* start address of memory chunk */
 	unsigned long end_addr;		/* end address of memory chunk (inclusive) */
-	unsigned long bits[0];		/* bitmap for allocating memory chunk */
+	unsigned long bits[];		/* bitmap for allocating memory chunk */
 };
 
 /*
diff --git a/include/linux/i2c-mux.h b/include/linux/i2c-mux.h
index c5a977320f82..98ef73b7c8fd 100644
--- a/include/linux/i2c-mux.h
+++ b/include/linux/i2c-mux.h
@@ -29,7 +29,7 @@ struct i2c_mux_core {
 
 	int num_adapters;
 	int max_adapters;
-	struct i2c_adapter *adapter[0];
+	struct i2c_adapter *adapter[];
 };
 
 struct i2c_mux_core *i2c_mux_alloc(struct i2c_adapter *parent,
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index bc83af0d38d1..7433aba207bd 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -2,7 +2,7 @@
 /*
  * i2c.h - definitions for the Linux i2c bus interface
  * Copyright (C) 1995-2000 Simon G. Vogl
- * Copyright (C) 2013-2019 Wolfram Sang <wsa@the-dreams.de>
+ * Copyright (C) 2013-2019 Wolfram Sang <wsa@kernel.org>
  *
  * With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
  * Frodo Looijaard <frodol@dds.nl>
@@ -462,12 +462,6 @@ i2c_new_scanned_device(struct i2c_adapter *adap,
 		       unsigned short const *addr_list,
 		       int (*probe)(struct i2c_adapter *adap, unsigned short addr));
 
-struct i2c_client *
-i2c_new_probed_device(struct i2c_adapter *adap,
-		       struct i2c_board_info *info,
-		       unsigned short const *addr_list,
-		       int (*probe)(struct i2c_adapter *adap, unsigned short addr));
-
 /* Common custom probe functions */
 int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr);
 
diff --git a/include/linux/igmp.h b/include/linux/igmp.h
index 463047d0190b..faa6586a5783 100644
--- a/