Merge tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging / IIO driver updates from Greg KH:
 "Here is the big staging and iio driver update for 5.2-rc1.

  Lots of tiny fixes all over the staging and IIO driver trees here,
  along with some new IIO drivers.

  The "counter" subsystem was added in here as well, as it is needed by
  the IIO drivers and subsystem.

  Also we ended up deleting two drivers, making this pull request remove
  a few hundred thousand lines of code, always a nice thing to see. Both
  of the drivers removed have been replaced with "real" drivers in their
  various subsystem directories, and they will be coming to you from
  those locations during this merge window.

  There are some core vt/selection changes in here, that was due to some
  cleanups needed for the speakup fixes. Those have all been acked by
  the various subsystem maintainers (i.e. me), so those are ok.

  We also added a few new drivers, for some odd hardware, giving new
  developers plenty to work on with basic coding style cleanups to come
  in the near future.

  Other than that, nothing unusual here.

  All of these have been in linux-next for a while with no reported
  issues, other than an odd gcc warning for one of the new drivers that
  should be fixed up soon"

[ I fixed up the warning myself  - Linus ]

* tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (663 commits)
  staging: kpc2000: kpc_spi: Fix build error for {read,write}q
  Staging: rtl8192e: Remove extra space before break statement
  Staging: rtl8192u: ieee80211: Fix if-else indentation warning
  Staging: rtl8192u: ieee80211: Fix indentation errors by removing extra spaces
  staging: most: cdev: fix chrdev_region leak in mod_exit
  staging: wlan-ng: Fix improper SPDX comment style
  staging: rtl8192u: ieee80211: Resolve ERROR reported by checkpatch
  staging: vc04_services: bcm2835-camera: Compress two lines into one line
  staging: rtl8723bs: core: Use !x in place of NULL comparison.
  staging: rtl8723bs: core: Prefer using the BIT Macro.
  staging: fieldbus: anybus-s: fix wait_for_completion_timeout return handling
  staging: kpc2000: fix up build problems with readq()
  staging: rtlwifi: move remaining phydm .h files
  staging: rtlwifi: strip down phydm .h files
  staging: rtlwifi: delete the staging driver
  staging: fieldbus: anybus-s: rename bus id field to avoid confusion
  staging: fieldbus: anybus-s: keep device bus id in bus endianness
  Staging: sm750fb: Change *array into *const array
  staging: rtl8192u: ieee80211: Fix spelling mistake
  staging: rtl8192u: ieee80211: Replace bit shifting with BIT macro
  ...

1 files changed, 44 insertions, 52 deletions

diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index 31eef8395774..a2e03c932102 100644
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -313,12 +313,12 @@ static int z_erofs_vle_work_add_page(
 
 	/* give priority for the compressed data storage */
 	if (builder->role >= Z_EROFS_VLE_WORK_PRIMARY &&
-		type == Z_EROFS_PAGE_TYPE_EXCLUSIVE &&
-		try_to_reuse_as_compressed_page(builder, page))
+	    type == Z_EROFS_PAGE_TYPE_EXCLUSIVE &&
+	    try_to_reuse_as_compressed_page(builder, page))
 		return 0;
 
 	ret = z_erofs_pagevec_ctor_enqueue(&builder->vector,
-		page, type, &occupied);
+					   page, type, &occupied);
 	builder->work->vcnt += (unsigned int)ret;
 
 	return ret ? 0 : -EAGAIN;
@@ -464,10 +464,9 @@ z_erofs_vle_work_register(const struct z_erofs_vle_work_finder *f,
 	grp->obj.index = f->idx;
 	grp->llen = map->m_llen;
 
-	z_erofs_vle_set_workgrp_fmt(grp,
-		(map->m_flags & EROFS_MAP_ZIPPED) ?
-			Z_EROFS_VLE_WORKGRP_FMT_LZ4 :
-			Z_EROFS_VLE_WORKGRP_FMT_PLAIN);
+	z_erofs_vle_set_workgrp_fmt(grp, (map->m_flags & EROFS_MAP_ZIPPED) ?
+				    Z_EROFS_VLE_WORKGRP_FMT_LZ4 :
+				    Z_EROFS_VLE_WORKGRP_FMT_PLAIN);
 
 	/* new workgrps have been claimed as type 1 */
 	WRITE_ONCE(grp->next, *f->owned_head);
@@ -554,7 +553,8 @@ repeat:
 		return PTR_ERR(work);
 got_it:
 	z_erofs_pagevec_ctor_init(&builder->vector,
-		Z_EROFS_VLE_INLINE_PAGEVECS, work->pagevec, work->vcnt);
+				  Z_EROFS_VLE_INLINE_PAGEVECS,
+				  work->pagevec, work->vcnt);
 
 	if (builder->role >= Z_EROFS_VLE_WORK_PRIMARY) {
 		/* enable possibly in-place decompression */
@@ -594,8 +594,9 @@ void erofs_workgroup_free_rcu(struct erofs_workgroup *grp)
 	call_rcu(&work->rcu, z_erofs_rcu_callback);
 }
 
-static void __z_erofs_vle_work_release(struct z_erofs_vle_workgroup *grp,
-	struct z_erofs_vle_work *work __maybe_unused)
+static void
+__z_erofs_vle_work_release(struct z_erofs_vle_workgroup *grp,
+			   struct z_erofs_vle_work *work __maybe_unused)
 {
 	erofs_workgroup_put(&grp->obj);
 }
@@ -715,7 +716,7 @@ repeat:
 
 	/* lucky, within the range of the current map_blocks */
 	if (offset + cur >= map->m_la &&
-		offset + cur < map->m_la + map->m_llen) {
+	    offset + cur < map->m_la + map->m_llen) {
 		/* didn't get a valid unzip work previously (very rare) */
 		if (!builder->work)
 			goto restart_now;
@@ -781,8 +782,8 @@ retry:
 		struct page *const newpage =
 			__stagingpage_alloc(page_pool, GFP_NOFS);
 
-		err = z_erofs_vle_work_add_page(builder,
-			newpage, Z_EROFS_PAGE_TYPE_EXCLUSIVE);
+		err = z_erofs_vle_work_add_page(builder, newpage,
+						Z_EROFS_PAGE_TYPE_EXCLUSIVE);
 		if (likely(!err))
 			goto retry;
 	}
@@ -843,12 +844,10 @@ static void z_erofs_vle_unzip_kickoff(void *ptr, int bios)
 
 static inline void z_erofs_vle_read_endio(struct bio *bio)
 {
-	const blk_status_t err = bio->bi_status;
+	struct erofs_sb_info *sbi = NULL;
+	blk_status_t err = bio->bi_status;
 	unsigned int i;
 	struct bio_vec *bvec;
-#ifdef EROFS_FS_HAS_MANAGED_CACHE
-	struct address_space *mc = NULL;
-#endif
 	struct bvec_iter_all iter_all;
 
 	bio_for_each_segment_all(bvec, bio, i, iter_all) {
@@ -858,20 +857,18 @@ static inline void z_erofs_vle_read_endio(struct bio *bio)
 		DBG_BUGON(PageUptodate(page));
 		DBG_BUGON(!page->mapping);
 
-#ifdef EROFS_FS_HAS_MANAGED_CACHE
-		if (unlikely(!mc && !z_erofs_is_stagingpage(page))) {
-			struct inode *const inode = page->mapping->host;
-			struct super_block *const sb = inode->i_sb;
+		if (unlikely(!sbi && !z_erofs_is_stagingpage(page))) {
+			sbi = EROFS_SB(page->mapping->host->i_sb);
 
-			mc = MNGD_MAPPING(EROFS_SB(sb));
+			if (time_to_inject(sbi, FAULT_READ_IO)) {
+				erofs_show_injection_info(FAULT_READ_IO);
+				err = BLK_STS_IOERR;
+			}
 		}
 
-		/*
-		 * If mc has not gotten, it equals NULL,
-		 * however, page->mapping never be NULL if working properly.
-		 */
-		cachemngd = (page->mapping == mc);
-#endif
+		/* sbi should already be gotten if the page is managed */
+		if (sbi)
+			cachemngd = erofs_page_is_managed(sbi, page);
 
 		if (unlikely(err))
 			SetPageError(page);
@@ -890,8 +887,8 @@ static struct page *z_pagemap_global[Z_EROFS_VLE_VMAP_GLOBAL_PAGES];
 static DEFINE_MUTEX(z_pagemap_global_lock);
 
 static int z_erofs_vle_unzip(struct super_block *sb,
-	struct z_erofs_vle_workgroup *grp,
-	struct list_head *page_pool)
+			     struct z_erofs_vle_workgroup *grp,
+			     struct list_head *page_pool)
 {
 	struct erofs_sb_info *const sbi = EROFS_SB(sb);
 	const unsigned int clusterpages = erofs_clusterpages(sbi);
@@ -919,12 +916,12 @@ static int z_erofs_vle_unzip(struct super_block *sb,
 	if (likely(nr_pages <= Z_EROFS_VLE_VMAP_ONSTACK_PAGES))
 		pages = pages_onstack;
 	else if (nr_pages <= Z_EROFS_VLE_VMAP_GLOBAL_PAGES &&
-		mutex_trylock(&z_pagemap_global_lock))
+		 mutex_trylock(&z_pagemap_global_lock))
 		pages = z_pagemap_global;
 	else {
 repeat:
-		pages = kvmalloc_array(nr_pages,
-			sizeof(struct page *), GFP_KERNEL);
+		pages = kvmalloc_array(nr_pages, sizeof(struct page *),
+				       GFP_KERNEL);
 
 		/* fallback to global pagemap for the lowmem scenario */
 		if (unlikely(!pages)) {
@@ -940,8 +937,8 @@ repeat:
 	for (i = 0; i < nr_pages; ++i)
 		pages[i] = NULL;
 
-	z_erofs_pagevec_ctor_init(&ctor,
-		Z_EROFS_VLE_INLINE_PAGEVECS, work->pagevec, 0);
+	z_erofs_pagevec_ctor_init(&ctor, Z_EROFS_VLE_INLINE_PAGEVECS,
+				  work->pagevec, 0);
 
 	for (i = 0; i < work->vcnt; ++i) {
 		unsigned int pagenr;
@@ -983,13 +980,11 @@ repeat:
 		DBG_BUGON(!page->mapping);
 
 		if (!z_erofs_is_stagingpage(page)) {
-#ifdef EROFS_FS_HAS_MANAGED_CACHE
-			if (page->mapping == MNGD_MAPPING(sbi)) {
+			if (erofs_page_is_managed(sbi, page)) {
 				if (unlikely(!PageUptodate(page)))
 					err = -EIO;
 				continue;
 			}
-#endif
 
 			/*
 			 * only if non-head page can be selected
@@ -1019,7 +1014,7 @@ repeat:
 
 	if (z_erofs_vle_workgrp_fmt(grp) == Z_EROFS_VLE_WORKGRP_FMT_PLAIN) {
 		err = z_erofs_vle_plain_copy(compressed_pages, clusterpages,
-			pages, nr_pages, work->pageofs);
+					     pages, nr_pages, work->pageofs);
 		goto out;
 	}
 
@@ -1048,8 +1043,8 @@ skip_allocpage:
 		goto out;
 	}
 
-	err = z_erofs_vle_unzip_vmap(compressed_pages,
-		clusterpages, vout, llen, work->pageofs, overlapped);
+	err = z_erofs_vle_unzip_vmap(compressed_pages, clusterpages, vout,
+				     llen, work->pageofs, overlapped);
 
 	erofs_vunmap(vout, nr_pages);
 
@@ -1058,10 +1053,9 @@ out:
 	for (i = 0; i < clusterpages; ++i) {
 		page = compressed_pages[i];
 
-#ifdef EROFS_FS_HAS_MANAGED_CACHE
-		if (page->mapping == MNGD_MAPPING(sbi))
+		if (erofs_page_is_managed(sbi, page))
 			continue;
-#endif
+
 		/* recycle all individual staging pages */
 		(void)z_erofs_gather_if_stagingpage(page_pool, page);
 
@@ -1446,10 +1440,8 @@ submit_bio_retry:
 
 		if (!bio) {
 			bio = erofs_grab_bio(sb, first_index + i,
-					     BIO_MAX_PAGES,
+					     BIO_MAX_PAGES, bi_private,
 					     z_erofs_vle_read_endio, true);
-			bio->bi_private = bi_private;
-
 			++nr_bios;
 		}
 
@@ -1586,7 +1578,7 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp,
 			struct erofs_vnode *vi = EROFS_V(inode);
 
 			errln("%s, readahead error at page %lu of nid %llu",
-				__func__, page->index, vi->nid);
+			      __func__, page->index, vi->nid);
 		}
 
 		put_page(page);
@@ -1741,8 +1733,8 @@ vle_get_logical_extent_head(const struct vle_map_blocks_iter_ctx *ctx,
 }
 
 int z_erofs_map_blocks_iter(struct inode *inode,
-	struct erofs_map_blocks *map,
-	int flags)
+			    struct erofs_map_blocks *map,
+			    int flags)
 {
 	void *kaddr;
 	const struct vle_map_blocks_iter_ctx ctx = {
@@ -1849,7 +1841,7 @@ int z_erofs_map_blocks_iter(struct inode *inode,
 		/* logical cluster number should be >= 1 */
 		if (unlikely(!lcn)) {
 			errln("invalid logical cluster 0 at nid %llu",
-				EROFS_V(inode)->nid);
+			      EROFS_V(inode)->nid);
 			err = -EIO;
 			goto unmap_out;
 		}
@@ -1869,7 +1861,7 @@ int z_erofs_map_blocks_iter(struct inode *inode,
 		break;
 	default:
 		errln("unknown cluster type %u at offset %llu of nid %llu",
-			cluster_type, ofs, EROFS_V(inode)->nid);
+		      cluster_type, ofs, EROFS_V(inode)->nid);
 		err = -EIO;
 		goto unmap_out;
 	}