Merge tag 'asoc-v5.1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v5.1

Lots and lots of new drivers so far, a highlight being the MediaTek
BTCVSD which is a driver for a Bluetooth radio chip - the first such
driver we've had upstream.  Hopefully we will soon also see a baseband
with an upstream driver!

 - Support for only powering up channels that are actively being used.
 - Quite a few improvements to simplify the generic card drivers,
   especially the merge of the SCU cards into the main generic drivers.
 - Lots of fixes for probing on Intel systems, trying to rationalize
   things to look more standard from a framework point of view.
 - New drivers for Asahi Kasei Microdevices AK4497, Cirrus Logic CS4341,
   Google ChromeOS embedded controllers, Ingenic JZ4725B, MediaTek
   BTCVSD, MT8183 and MT6358, NXP MICFIL, Rockchip RK3328, Spreadtrum
   DMA controllers, Qualcomm WCD9335, Xilinx S/PDIF and PCM formatters.

6 files changed, 30 insertions, 13 deletions

diff --git a/block/bfq-wf2q.c b/block/bfq-wf2q.c
index 63e0f12be7c9..72adbbe975d5 100644
--- a/block/bfq-wf2q.c
+++ b/block/bfq-wf2q.c
@@ -1154,15 +1154,14 @@ static void bfq_activate_requeue_entity(struct bfq_entity *entity,
 }
 
 /**
- * __bfq_deactivate_entity - deactivate an entity from its service tree.
- * @entity: the entity to deactivate.
+ * __bfq_deactivate_entity - update sched_data and service trees for
+ * entity, so as to represent entity as inactive
+ * @entity: the entity being deactivated.
  * @ins_into_idle_tree: if false, the entity will not be put into the
  *			idle tree.
  *
- * Deactivates an entity, independently of its previous state.  Must
- * be invoked only if entity is on a service tree. Extracts the entity
- * from that tree, and if necessary and allowed, puts it into the idle
- * tree.
+ * If necessary and allowed, puts entity into the idle tree. NOTE:
+ * entity may be on no tree if in service.
  */
 bool __bfq_deactivate_entity(struct bfq_entity *entity, bool ins_into_idle_tree)
 {
diff --git a/block/blk-core.c b/block/blk-core.c
index c78042975737..3c5f61ceeb67 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -661,7 +661,6 @@ no_merge:
  * blk_attempt_plug_merge - try to merge with %current's plugged list
  * @q: request_queue new bio is being queued at
  * @bio: new bio being queued
- * @request_count: out parameter for number of traversed plugged requests
  * @same_queue_rq: pointer to &struct request that gets filled in when
  * another request associated with @q is found on the plug list
  * (optional, may be %NULL)
@@ -1683,6 +1682,15 @@ EXPORT_SYMBOL(kblockd_mod_delayed_work_on);
  * @plug:	The &struct blk_plug that needs to be initialized
  *
  * Description:
+ *   blk_start_plug() indicates to the block layer an intent by the caller
+ *   to submit multiple I/O requests in a batch.  The block layer may use
+ *   this hint to defer submitting I/Os from the caller until blk_finish_plug()
+ *   is called.  However, the block layer may choose to submit requests
+ *   before a call to blk_finish_plug() if the number of queued I/Os
+ *   exceeds %BLK_MAX_REQUEST_COUNT, or if the size of the I/O is larger than
+ *   %BLK_PLUG_FLUSH_SIZE.  The queued I/Os may also be submitted early if
+ *   the task schedules (see below).
+ *
  *   Tracking blk_plug inside the task_struct will help with auto-flushing the
  *   pending I/O should the task end up blocking between blk_start_plug() and
  *   blk_finish_plug(). This is important from a performance perspective, but
@@ -1765,6 +1773,16 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule)
 		blk_mq_flush_plug_list(plug, from_schedule);
 }
 
+/**
+ * blk_finish_plug - mark the end of a batch of submitted I/O
+ * @plug:	The &struct blk_plug passed to blk_start_plug()
+ *
+ * Description:
+ * Indicate that a batch of I/O submissions is complete.  This function
+ * must be paired with an initial call to blk_start_plug().  The intent
+ * is to allow the block layer to optimize I/O submission.  See the
+ * documentation for blk_start_plug() for more information.
+ */
 void blk_finish_plug(struct blk_plug *plug)
 {
 	if (plug != current->plug)
diff --git a/block/blk-mq-debugfs-zoned.c b/block/blk-mq-debugfs-zoned.c
index fb2c82c351e4..038cb627c868 100644
--- a/block/blk-mq-debugfs-zoned.c
+++ b/block/blk-mq-debugfs-zoned.c
@@ -1,8 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2017 Western Digital Corporation or its affiliates.
- *
- * This file is released under the GPL.
  */
 
 #include <linux/blkdev.h>
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 90d68760af08..f8120832ca7b 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -308,8 +308,9 @@ static const char *const cmd_flag_name[] = {
 	CMD_FLAG_NAME(PREFLUSH),
 	CMD_FLAG_NAME(RAHEAD),
 	CMD_FLAG_NAME(BACKGROUND),
-	CMD_FLAG_NAME(NOUNMAP),
 	CMD_FLAG_NAME(NOWAIT),
+	CMD_FLAG_NAME(NOUNMAP),
+	CMD_FLAG_NAME(HIPRI),
 };
 #undef CMD_FLAG_NAME
 
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3ba37b9e15e9..8f5b533764ca 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1906,7 +1906,7 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
 {
 	const int is_sync = op_is_sync(bio->bi_opf);
 	const int is_flush_fua = op_is_flush(bio->bi_opf);
-	struct blk_mq_alloc_data data = { .flags = 0, .cmd_flags = bio->bi_opf };
+	struct blk_mq_alloc_data data = { .flags = 0};
 	struct request *rq;
 	struct blk_plug *plug;
 	struct request *same_queue_rq = NULL;
@@ -1928,6 +1928,7 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
 
 	rq_qos_throttle(q, bio);
 
+	data.cmd_flags = bio->bi_opf;
 	rq = blk_mq_get_request(q, bio, &data);
 	if (unlikely(!rq)) {
 		rq_qos_cleanup(q, bio);
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index f0c56649775f..fd166fbb0f65 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -597,7 +597,7 @@ static void wbt_track(struct rq_qos *rqos, struct request *rq, struct bio *bio)
 	rq->wbt_flags |= bio_to_wbt_flags(rwb, bio);
 }
 
-void wbt_issue(struct rq_qos *rqos, struct request *rq)
+static void wbt_issue(struct rq_qos *rqos, struct request *rq)
 {
 	struct rq_wb *rwb = RQWB(rqos);
 
@@ -617,7 +617,7 @@ void wbt_issue(struct rq_qos *rqos, struct request *rq)
 	}
 }
 
-void wbt_requeue(struct rq_qos *rqos, struct request *rq)
+static void wbt_requeue(struct rq_qos *rqos, struct request *rq)
 {
 	struct rq_wb *rwb = RQWB(rqos);
 	if (!rwb_enabled(rwb))