Merge tag 'asoc-v5.0' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.0/v4.20

As ever there's a lot of small and driver specific changes going on
here, but we do also have some relatively large changes in the core
thanks to the hard work of Charles and Morimoto-san:

 - More component transitions from Morimoto-san, I think we're about
   finished with this.  Thanks for all the hard work!
 - Morimoto-san also added a bunch of for_each_foo macros
 - A bunch of cleanups and fixes for DAPM from Charles.
 - MCLK support for several different devices, including CS42L51, STM32
   SAI, and MAX98373.
 - Support for Allwinner A64 CODEC analog, Intel boards with DA7219 and
   MAX98927, Meson AXG PDM inputs, Nuvoton NAU8822, Renesas R8A7744 and
   TI PCM3060.

1 files changed, 61 insertions, 93 deletions

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index cae689de75fd..c44925e4e481 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2010-2011 Neil Brown
- * Copyright (C) 2010-2017 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved.
  *
  * This file is released under the GPL.
  */
@@ -29,9 +29,6 @@
  */
 #define	MIN_RAID456_JOURNAL_SPACE (4*2048)
 
-/* Global list of all raid sets */
-static LIST_HEAD(raid_sets);
-
 static bool devices_handle_discard_safely = false;
 
 /*
@@ -227,7 +224,6 @@ struct rs_layout {
 
 struct raid_set {
 	struct dm_target *ti;
-	struct list_head list;
 
 	uint32_t stripe_cache_entries;
 	unsigned long ctr_flags;
@@ -273,19 +269,6 @@ static void rs_config_restore(struct raid_set *rs, struct rs_layout *l)
 	mddev->new_chunk_sectors = l->new_chunk_sectors;
 }
 
-/* Find any raid_set in active slot for @rs on global list */
-static struct raid_set *rs_find_active(struct raid_set *rs)
-{
-	struct raid_set *r;
-	struct mapped_device *md = dm_table_get_md(rs->ti->table);
-
-	list_for_each_entry(r, &raid_sets, list)
-		if (r != rs && dm_table_get_md(r->ti->table) == md)
-			return r;
-
-	return NULL;
-}
-
 /* raid10 algorithms (i.e. formats) */
 #define	ALGORITHM_RAID10_DEFAULT	0
 #define	ALGORITHM_RAID10_NEAR		1
@@ -764,7 +747,6 @@ static struct raid_set *raid_set_alloc(struct dm_target *ti, struct raid_type *r
 
 	mddev_init(&rs->md);
 
-	INIT_LIST_HEAD(&rs->list);
 	rs->raid_disks = raid_devs;
 	rs->delta_disks = 0;
 
@@ -782,9 +764,6 @@ static struct raid_set *raid_set_alloc(struct dm_target *ti, struct raid_type *r
 	for (i = 0; i < raid_devs; i++)
 		md_rdev_init(&rs->dev[i].rdev);
 
-	/* Add @rs to global list. */
-	list_add(&rs->list, &raid_sets);
-
 	/*
 	 * Remaining items to be initialized by further RAID params:
 	 *  rs->md.persistent
@@ -797,7 +776,7 @@ static struct raid_set *raid_set_alloc(struct dm_target *ti, struct raid_type *r
 	return rs;
 }
 
-/* Free all @rs allocations and remove it from global list. */
+/* Free all @rs allocations */
 static void raid_set_free(struct raid_set *rs)
 {
 	int i;
@@ -815,8 +794,6 @@ static void raid_set_free(struct raid_set *rs)
 			dm_put_device(rs->ti, rs->dev[i].data_dev);
 	}
 
-	list_del(&rs->list);
-
 	kfree(rs);
 }
 
@@ -2649,7 +2626,7 @@ static int rs_adjust_data_offsets(struct raid_set *rs)
 		return 0;
 	}
 
-	/* HM FIXME: get InSync raid_dev? */
+	/* HM FIXME: get In_Sync raid_dev? */
 	rdev = &rs->dev[0].rdev;
 
 	if (rs->delta_disks < 0) {
@@ -3149,6 +3126,11 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 		set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
 		rs_set_new(rs);
 	} else if (rs_is_recovering(rs)) {
+		/* Rebuild particular devices */
+		if (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags)) {
+			set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
+			rs_setup_recovery(rs, MaxSector);
+		}
 		/* A recovering raid set may be resized */
 		; /* skip setup rs */
 	} else if (rs_is_reshaping(rs)) {
@@ -3242,6 +3224,8 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 	/* Start raid set read-only and assumed clean to change in raid_resume() */
 	rs->md.ro = 1;
 	rs->md.in_sync = 1;
+
+	/* Keep array frozen */
 	set_bit(MD_RECOVERY_FROZEN, &rs->md.recovery);
 
 	/* Has to be held on running the array */
@@ -3265,7 +3249,7 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 	rs->callbacks.congested_fn = raid_is_congested;
 	dm_table_add_target_callbacks(ti->table, &rs->callbacks);
 
-	/* If raid4/5/6 journal mode explictely requested (only possible with journal dev) -> set it */
+	/* If raid4/5/6 journal mode explicitly requested (only possible with journal dev) -> set it */
 	if (test_bit(__CTR_FLAG_JOURNAL_MODE, &rs->ctr_flags)) {
 		r = r5c_journal_mode_set(&rs->md, rs->journal_dev.mode);
 		if (r) {
@@ -3350,32 +3334,53 @@ static int raid_map(struct dm_target *ti, struct bio *bio)
 	return DM_MAPIO_SUBMITTED;
 }
 
-/* Return string describing the current sync action of @mddev */
-static const char *decipher_sync_action(struct mddev *mddev, unsigned long recovery)
+/* Return sync state string for @state */
+enum sync_state { st_frozen, st_reshape, st_resync, st_check, st_repair, st_recover, st_idle };
+static const char *sync_str(enum sync_state state)
+{
+	/* Has to be in above sync_state order! */
+	static const char *sync_strs[] = {
+		"frozen",
+		"reshape",
+		"resync",
+		"check",
+		"repair",
+		"recover",
+		"idle"
+	};
+
+	return __within_range(state, 0, ARRAY_SIZE(sync_strs) - 1) ? sync_strs[state] : "undef";
+};
+
+/* Return enum sync_state for @mddev derived from @recovery flags */
+static enum sync_state decipher_sync_action(struct mddev *mddev, unsigned long recovery)
 {
 	if (test_bit(MD_RECOVERY_FROZEN, &recovery))
-		return "frozen";
+		return st_frozen;
 
-	/* The MD sync thread can be done with io but still be running */
+	/* The MD sync thread can be done with io or be interrupted but still be running */
 	if (!test_bit(MD_RECOVERY_DONE, &recovery) &&
 	    (test_bit(MD_RECOVERY_RUNNING, &recovery) ||
 	     (!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &recovery)))) {
 		if (test_bit(MD_RECOVERY_RESHAPE, &recovery))
-			return "reshape";
+			return st_reshape;
 
 		if (test_bit(MD_RECOVERY_SYNC, &recovery)) {
 			if (!test_bit(MD_RECOVERY_REQUESTED, &recovery))
-				return "resync";
-			else if (test_bit(MD_RECOVERY_CHECK, &recovery))
-				return "check";
-			return "repair";
+				return st_resync;
+			if (test_bit(MD_RECOVERY_CHECK, &recovery))
+				return st_check;
+			return st_repair;
 		}
 
 		if (test_bit(MD_RECOVERY_RECOVER, &recovery))
-			return "recover";
+			return st_recover;
+
+		if (mddev->reshape_position != MaxSector)
+			return st_reshape;
 	}
 
-	return "idle";
+	return st_idle;
 }
 
 /*
@@ -3409,6 +3414,7 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
 				sector_t resync_max_sectors)
 {
 	sector_t r;
+	enum sync_state state;
 	struct mddev *mddev = &rs->md;
 
 	clear_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
@@ -3419,20 +3425,14 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
 		set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
 
 	} else {
-		if (!test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags) &&
-		    !test_bit(MD_RECOVERY_INTR, &recovery) &&
-		    (test_bit(MD_RECOVERY_NEEDED, &recovery) ||
-		     test_bit(MD_RECOVERY_RESHAPE, &recovery) ||
-		     test_bit(MD_RECOVERY_RUNNING, &recovery)))
-			r = mddev->curr_resync_completed;
-		else
+		state = decipher_sync_action(mddev, recovery);
+
+		if (state == st_idle && !test_bit(MD_RECOVERY_INTR, &recovery))
 			r = mddev->recovery_cp;
+		else
+			r = mddev->curr_resync_completed;
 
-		if (r >= resync_max_sectors &&
-		    (!test_bit(MD_RECOVERY_REQUESTED, &recovery) ||
-		     (!test_bit(MD_RECOVERY_FROZEN, &recovery) &&
-		      !test_bit(MD_RECOVERY_NEEDED, &recovery) &&
-		      !test_bit(MD_RECOVERY_RUNNING, &recovery)))) {
+		if (state == st_idle && r >= resync_max_sectors) {
 			/*
 			 * Sync complete.
 			 */
@@ -3440,24 +3440,20 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
 			if (test_bit(MD_RECOVERY_RECOVER, &recovery))
 				set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
 
-		} else if (test_bit(MD_RECOVERY_RECOVER, &recovery)) {
+		} else if (state == st_recover)
 			/*
 			 * In case we are recovering, the array is not in sync
 			 * and health chars should show the recovering legs.
 			 */
 			;
-
-		} else if (test_bit(MD_RECOVERY_SYNC, &recovery) &&
-			   !test_bit(MD_RECOVERY_REQUESTED, &recovery)) {
+		else if (state == st_resync)
 			/*
 			 * If "resync" is occurring, the raid set
 			 * is or may be out of sync hence the health
 			 * characters shall be 'a'.
 			 */
 			set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
-
-		} else if (test_bit(MD_RECOVERY_RESHAPE, &recovery) &&
-			   !test_bit(MD_RECOVERY_REQUESTED, &recovery)) {
+		else if (state == st_reshape)
 			/*
 			 * If "reshape" is occurring, the raid set
 			 * is or may be out of sync hence the health
@@ -3465,7 +3461,7 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
 			 */
 			set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
 
-		} else if (test_bit(MD_RECOVERY_REQUESTED, &recovery)) {
+		else if (state == st_check || state == st_repair)
 			/*
 			 * If "check" or "repair" is occurring, the raid set has
 			 * undergone an initial sync and the health characters
@@ -3473,12 +3469,12 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
 			 */
 			set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
 
-		} else {
+		else {
 			struct md_rdev *rdev;
 
 			/*
 			 * We are idle and recovery is needed, prevent 'A' chars race
-			 * caused by components still set to in-sync by constrcuctor.
+			 * caused by components still set to in-sync by constructor.
 			 */
 			if (test_bit(MD_RECOVERY_NEEDED, &recovery))
 				set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
@@ -3542,7 +3538,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
 		progress = rs_get_progress(rs, recovery, resync_max_sectors);
 		resync_mismatches = (mddev->last_sync_action && !strcasecmp(mddev->last_sync_action, "check")) ?
 				    atomic64_read(&mddev->resync_mismatches) : 0;
-		sync_action = decipher_sync_action(&rs->md, recovery);
+		sync_action = sync_str(decipher_sync_action(&rs->md, recovery));
 
 		/* HM FIXME: do we want another state char for raid0? It shows 'D'/'A'/'-' now */
 		for (i = 0; i < rs->raid_disks; i++)
@@ -3892,14 +3888,13 @@ static int rs_start_reshape(struct raid_set *rs)
 	struct mddev *mddev = &rs->md;
 	struct md_personality *pers = mddev->pers;
 
+	/* Don't allow the sync thread to work until the table gets reloaded. */
+	set_bit(MD_RECOVERY_WAIT, &mddev->recovery);
+
 	r = rs_setup_reshape(rs);
 	if (r)
 		return r;
 
-	/* Need to be resumed to be able to start reshape, recovery is frozen until raid_resume() though */
-	if (test_and_clear_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags))
-		mddev_resume(mddev);
-
 	/*
 	 * Check any reshape constraints enforced by the personalility
 	 *
@@ -3923,10 +3918,6 @@ static int rs_start_reshape(struct raid_set *rs)
 		}
 	}
 
-	/* Suspend because a resume will happen in raid_resume() */
-	set_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags);
-	mddev_suspend(mddev);
-
 	/*
 	 * Now reshape got set up, update superblocks to
 	 * reflect the fact so that a table reload will
@@ -3947,29 +3938,6 @@ static int raid_preresume(struct dm_target *ti)
 	if (test_and_set_bit(RT_FLAG_RS_PRERESUMED, &rs->runtime_flags))
 		return 0;
 
-	if (!test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags)) {
-		struct raid_set *rs_active = rs_find_active(rs);
-
-		if (rs_active) {
-			/*
-			 * In case no rebuilds have been requested
-			 * and an active table slot exists, copy
-			 * current resynchonization completed and
-			 * reshape position pointers across from
-			 * suspended raid set in the active slot.
-			 *
-			 * This resumes the new mapping at current
-			 * offsets to continue recover/reshape without
-			 * necessarily redoing a raid set partially or
-			 * causing data corruption in case of a reshape.
-			 */
-			if (rs_active->md.curr_resync_completed != MaxSector)
-				mddev->curr_resync_completed = rs_active->md.curr_resync_completed;
-			if (rs_active->md.reshape_position != MaxSector)
-				mddev->reshape_position = rs_active->md.reshape_position;
-		}
-	}
-
 	/*
 	 * The superblocks need to be updated on disk if the
 	 * array is new or new devices got added (thus zeroed
@@ -4046,7 +4014,7 @@ static void raid_resume(struct dm_target *ti)
 
 static struct target_type raid_target = {
 	.name = "raid",
-	.version = {1, 13, 2},
+	.version = {1, 14, 0},
 	.module = THIS_MODULE,
 	.ctr = raid_ctr,
 	.dtr = raid_dtr,