Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (qla2xxx, lpfc, ufs, hisi_sas, mpi3mr,
  mpt3sas, target). The biggest change (from my biased viewpoint) being
  that the mpi3mr now attached to the SAS transport class, making it the
  first fusion type device to do so.

  Beyond the usual bug fixing and security class reworks, there aren't a
  huge number of core changes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
  scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()
  scsi: mpi3mr: Remove unnecessary cast
  scsi: stex: Properly zero out the passthrough command structure
  scsi: mpi3mr: Update driver version to 8.2.0.3.0
  scsi: mpi3mr: Fix scheduling while atomic type bug
  scsi: mpi3mr: Scan the devices during resume time
  scsi: mpi3mr: Free enclosure objects during driver unload
  scsi: mpi3mr: Handle 0xF003 Fault Code
  scsi: mpi3mr: Graceful handling of surprise removal of PCIe HBA
  scsi: mpi3mr: Schedule IRQ kthreads only on non-RT kernels
  scsi: mpi3mr: Support new power management framework
  scsi: mpi3mr: Update mpi3 header files
  scsi: mpt3sas: Revert "scsi: mpt3sas: Fix ioc->base_readl() use"
  scsi: mpt3sas: Revert "scsi: mpt3sas: Fix writel() use"
  scsi: wd33c93: Remove dead code related to the long-gone config WD33C93_PIO
  scsi: core: Add I/O timeout count for SCSI device
  scsi: qedf: Populate sysfs attributes for vport
  scsi: pm8001: Replace one-element array with flexible-array member
  scsi: 3w-xxxx: Replace one-element array with flexible-array member
  scsi: hptiop: Replace one-element array with flexible-array member in struct hpt_iop_request_ioctl_command()
  ...

6 files changed, 68 insertions, 36 deletions

diff --git a/include/linux/trace.h b/include/linux/trace.h
index bf169612ffe1..b5e16e438448 100644
--- a/include/linux/trace.h
+++ b/include/linux/trace.h
@@ -2,8 +2,6 @@
 #ifndef _LINUX_TRACE_H
 #define _LINUX_TRACE_H
 
-#ifdef CONFIG_TRACING
-
 #define TRACE_EXPORT_FUNCTION	BIT(0)
 #define TRACE_EXPORT_EVENT	BIT(1)
 #define TRACE_EXPORT_MARKER	BIT(2)
@@ -28,6 +26,8 @@ struct trace_export {
 	int flags;
 };
 
+#ifdef CONFIG_TRACING
+
 int register_ftrace_export(struct trace_export *export);
 int unregister_ftrace_export(struct trace_export *export);
 
@@ -48,6 +48,38 @@ void osnoise_arch_unregister(void);
 void osnoise_trace_irq_entry(int id);
 void osnoise_trace_irq_exit(int id, const char *desc);
 
+#else /* CONFIG_TRACING */
+static inline int register_ftrace_export(struct trace_export *export)
+{
+	return -EINVAL;
+}
+static inline int unregister_ftrace_export(struct trace_export *export)
+{
+	return 0;
+}
+static inline void trace_printk_init_buffers(void)
+{
+}
+static inline int trace_array_printk(struct trace_array *tr, unsigned long ip,
+				     const char *fmt, ...)
+{
+	return 0;
+}
+static inline int trace_array_init_printk(struct trace_array *tr)
+{
+	return -EINVAL;
+}
+static inline void trace_array_put(struct trace_array *tr)
+{
+}
+static inline struct trace_array *trace_array_get_by_name(const char *name)
+{
+	return NULL;
+}
+static inline int trace_array_destroy(struct trace_array *tr)
+{
+	return 0;
+}
 #endif	/* CONFIG_TRACING */
 
 #endif	/* _LINUX_TRACE_H */
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index bac55decf900..7d3622db38ed 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -201,7 +201,7 @@ static inline unsigned int scsi_get_resid(struct scsi_cmnd *cmd)
 	for_each_sg(scsi_sglist(cmd), sg, nseg, __i)
 
 static inline int scsi_sg_copy_from_buffer(struct scsi_cmnd *cmd,
-					   void *buf, int buflen)
+					   const void *buf, int buflen)
 {
 	return sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
 				   buf, buflen);
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 2493bd65351a..c36656d8ac6c 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -231,6 +231,7 @@ struct scsi_device {
 	atomic_t iorequest_cnt;
 	atomic_t iodone_cnt;
 	atomic_t ioerr_cnt;
+	atomic_t iotmo_cnt;
 
 	struct device		sdev_gendev,
 				sdev_dev;
diff --git a/include/scsi/scsi_status.h b/include/scsi/scsi_status.h
index 31d30cee1869..9cb85262de64 100644
--- a/include/scsi/scsi_status.h
+++ b/include/scsi/scsi_status.h
@@ -62,12 +62,12 @@ enum scsi_host_status {
 					 * recover the link. Transport class will
 					 * retry or fail IO */
 	DID_TRANSPORT_FAILFAST = 0x0f, /* Transport class fastfailed the io */
-	DID_TARGET_FAILURE = 0x10, /* Permanent target failure, do not retry on
-				    * other paths */
-	DID_NEXUS_FAILURE = 0x11,  /* Permanent nexus failure, retry on other
-				    * paths might yield different results */
-	DID_ALLOC_FAILURE = 0x12,  /* Space allocation on the device failed */
-	DID_MEDIUM_ERROR = 0x13,  /* Medium error */
+	/*
+	 * We used to have DID_TARGET_FAILURE, DID_NEXUS_FAILURE,
+	 * DID_ALLOC_FAILURE and DID_MEDIUM_ERROR at 0x10 - 0x13. For compat
+	 * with userspace apps that parse the host byte for SG IO, we leave
+	 * that block of codes unused and start at 0x14 below.
+	 */
 	DID_TRANSPORT_MARGINAL = 0x14, /* Transport marginal errors */
 };
 
diff --git a/include/uapi/scsi/scsi_netlink_fc.h b/include/uapi/scsi/scsi_netlink_fc.h
index 7535253f1a96..b46e9cbeb001 100644
--- a/include/uapi/scsi/scsi_netlink_fc.h
+++ b/include/uapi/scsi/scsi_netlink_fc.h
@@ -35,7 +35,7 @@
  * FC Transport Broadcast Event Message :
  *   FC_NL_ASYNC_EVENT
  *
- * Note: if Vendor Unique message, &event_data will be  start of
+ * Note: if Vendor Unique message, event_data_flex will be start of
  * 	 vendor unique payload, and the length of the payload is
  *       per event_datalen
  *
@@ -50,7 +50,10 @@ struct fc_nl_event {
 	__u16 event_datalen;
 	__u32 event_num;
 	__u32 event_code;
-	__u32 event_data;
+	union {
+		__u32 event_data;
+		__DECLARE_FLEX_ARRAY(__u8, event_data_flex);
+	};
 } __attribute__((aligned(sizeof(__u64))));
 
 
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 7fe1a926cd99..9f28349ebcff 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -160,8 +160,10 @@ struct ufs_pm_lvl_states {
  * @task_tag: Task tag of the command
  * @lun: LUN of the command
  * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
- * @issue_time_stamp: time stamp for debug purposes
- * @compl_time_stamp: time stamp for statistics
+ * @issue_time_stamp: time stamp for debug purposes (CLOCK_MONOTONIC)
+ * @issue_time_stamp_local_clock: time stamp for debug purposes (local_clock)
+ * @compl_time_stamp: time stamp for statistics (CLOCK_MONOTONIC)
+ * @compl_time_stamp_local_clock: time stamp for debug purposes (local_clock)
  * @crypto_key_slot: the key slot to use for inline crypto (-1 if none)
  * @data_unit_num: the data unit number for the first block for inline crypto
  * @req_abort_skip: skip request abort task flag
@@ -185,7 +187,9 @@ struct ufshcd_lrb {
 	u8 lun; /* UPIU LUN id field is only 8-bit wide */
 	bool intr_cmd;
 	ktime_t issue_time_stamp;
+	u64 issue_time_stamp_local_clock;
 	ktime_t compl_time_stamp;
+	u64 compl_time_stamp_local_clock;
 #ifdef CONFIG_SCSI_UFS_CRYPTO
 	int crypto_key_slot;
 	u64 data_unit_num;
@@ -430,7 +434,7 @@ struct ufs_clk_scaling {
 struct ufs_event_hist {
 	int pos;
 	u32 val[UFS_EVENT_HIST_LENGTH];
-	ktime_t tstamp[UFS_EVENT_HIST_LENGTH];
+	u64 tstamp[UFS_EVENT_HIST_LENGTH];
 	unsigned long long cnt;
 };
 
@@ -446,10 +450,10 @@ struct ufs_event_hist {
  */
 struct ufs_stats {
 	u32 last_intr_status;
-	ktime_t last_intr_ts;
+	u64 last_intr_ts;
 
 	u32 hibern8_exit_cnt;
-	ktime_t last_hibern8_exit_tstamp;
+	u64 last_hibern8_exit_tstamp;
 	struct ufs_event_hist event[UFS_EVT_CNT];
 };
 
@@ -660,6 +664,12 @@ enum ufshcd_caps {
 	 * notification if it is supported by the UFS device.
 	 */
 	UFSHCD_CAP_TEMP_NOTIF				= 1 << 11,
+
+	/*
+	 * Enable WriteBooster when scaling up the clock and disable
+	 * WriteBooster when scaling the clock down.
+	 */
+	UFSHCD_CAP_WB_WITH_CLK_SCALING			= 1 << 12,
 };
 
 struct ufs_hba_variant_params {
@@ -1017,6 +1027,11 @@ static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
 	return hba->caps & UFSHCD_CAP_WB_EN;
 }
 
+static inline bool ufshcd_enable_wb_if_scaling_up(struct ufs_hba *hba)
+{
+	return hba->caps & UFSHCD_CAP_WB_WITH_CLK_SCALING;
+}
+
 #define ufshcd_writel(hba, val, reg)	\
 	writel((val), (hba)->mmio_base + (reg))
 #define ufshcd_readl(hba, reg)	\
@@ -1160,26 +1175,6 @@ static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
 	return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
 }
 
-/* Expose Query-Request API */
-int ufshcd_query_descriptor_retry(struct ufs_hba *hba,
-				  enum query_opcode opcode,
-				  enum desc_idn idn, u8 index,
-				  u8 selector,
-				  u8 *desc_buf, int *buf_len);
-int ufshcd_read_desc_param(struct ufs_hba *hba,
-			   enum desc_idn desc_id,
-			   int desc_index,
-			   u8 param_offset,
-			   u8 *param_read_buf,
-			   u8 param_size);
-int ufshcd_query_attr_retry(struct ufs_hba *hba, enum query_opcode opcode,
-			    enum attr_idn idn, u8 index, u8 selector,
-			    u32 *attr_val);
-int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
-		      enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
-int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
-	enum flag_idn idn, u8 index, bool *flag_res);
-
 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
 void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
@@ -1211,6 +1206,7 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
 			     enum query_opcode desc_op);
 
 int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
+int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable);
 int ufshcd_suspend_prepare(struct device *dev);
 int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm);
 void ufshcd_resume_complete(struct device *dev);