regmap: mmio: Allow passing an empty config->reg_stride

[linux.git] / drivers / md / persistent-data / dm-array.c

diff --git a/drivers/md/persistent-data/dm-array.c b/drivers/md/persistent-data/dm-array.c
index 3a963d783a865531ba59b49cf1042d69c0b0b450..798c9c53a343537be9b55ddbc59b83eb7b76b15f 100644 (file)
--- a/drivers/md/persistent-data/dm-array.c
+++ b/drivers/md/persistent-data/dm-array.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2012 Red Hat, Inc.
  *
@@ -57,7 +58,7 @@ static int array_block_check(struct dm_block_validator *v,
        __le32 csum_disk;
 
        if (dm_block_location(b) != le64_to_cpu(bh_le->blocknr)) {
-               DMERR_LIMIT("array_block_check failed: blocknr %llu != wanted %llu",
+               DMERR_LIMIT("%s failed: blocknr %llu != wanted %llu", __func__,
                            (unsigned long long) le64_to_cpu(bh_le->blocknr),
                            (unsigned long long) dm_block_location(b));
                return -ENOTBLK;
@@ -67,9 +68,9 @@ static int array_block_check(struct dm_block_validator *v,
                                               size_of_block - sizeof(__le32),
                                               CSUM_XOR));
        if (csum_disk != bh_le->csum) {
-               DMERR_LIMIT("array_block_check failed: csum %u != wanted %u",
-                           (unsigned) le32_to_cpu(csum_disk),
-                           (unsigned) le32_to_cpu(bh_le->csum));
+               DMERR_LIMIT("%s failed: csum %u != wanted %u", __func__,
+                           (unsigned int) le32_to_cpu(csum_disk),
+                           (unsigned int) le32_to_cpu(bh_le->csum));
                return -EILSEQ;
        }
 
@@ -94,7 +95,7 @@ static struct dm_block_validator array_validator = {
  * index - The index into _this_ specific block.
  */
 static void *element_at(struct dm_array_info *info, struct array_block *ab,
-                       unsigned index)
+                       unsigned int index)
 {
        unsigned char *entry = (unsigned char *) (ab + 1);
 
@@ -108,9 +109,10 @@ static void *element_at(struct dm_array_info *info, struct array_block *ab,
  * in an array block.
  */
 static void on_entries(struct dm_array_info *info, struct array_block *ab,
-                      void (*fn)(void *, const void *, unsigned))
+                      void (*fn)(void *, const void *, unsigned int))
 {
-       unsigned nr_entries = le32_to_cpu(ab->nr_entries);
+       unsigned int nr_entries = le32_to_cpu(ab->nr_entries);
+
        fn(info->value_type.context, element_at(info, ab, 0), nr_entries);
 }
 
@@ -171,7 +173,7 @@ static int alloc_ablock(struct dm_array_info *info, size_t size_of_block,
  * the current number of entries.
  */
 static void fill_ablock(struct dm_array_info *info, struct array_block *ab,
-                       const void *value, unsigned new_nr)
+                       const void *value, unsigned int new_nr)
 {
        uint32_t nr_entries, delta, i;
        struct dm_btree_value_type *vt = &info->value_type;
@@ -194,7 +196,7 @@ static void fill_ablock(struct dm_array_info *info, struct array_block *ab,
  * entries.
  */
 static void trim_ablock(struct dm_array_info *info, struct array_block *ab,
-                       unsigned new_nr)
+                       unsigned int new_nr)
 {
        uint32_t nr_entries, delta;
        struct dm_btree_value_type *vt = &info->value_type;
@@ -247,7 +249,7 @@ static void unlock_ablock(struct dm_array_info *info, struct dm_block *block)
  * / max_entries).
  */
 static int lookup_ablock(struct dm_array_info *info, dm_block_t root,
-                        unsigned index, struct dm_block **block,
+                        unsigned int index, struct dm_block **block,
                         struct array_block **ab)
 {
        int r;
@@ -295,7 +297,7 @@ static int __shadow_ablock(struct dm_array_info *info, dm_block_t b,
  * The shadow op will often be a noop.  Only insert if it really
  * copied data.
  */
-static int __reinsert_ablock(struct dm_array_info *info, unsigned index,
+static int __reinsert_ablock(struct dm_array_info *info, unsigned int index,
                             struct dm_block *block, dm_block_t b,
                             dm_block_t *root)
 {
@@ -321,7 +323,7 @@ static int __reinsert_ablock(struct dm_array_info *info, unsigned index,
  * for both the current root block, and the new one.
  */
 static int shadow_ablock(struct dm_array_info *info, dm_block_t *root,
-                        unsigned index, struct dm_block **block,
+                        unsigned int index, struct dm_block **block,
                         struct array_block **ab)
 {
        int r;
@@ -346,7 +348,7 @@ static int shadow_ablock(struct dm_array_info *info, dm_block_t *root,
  */
 static int insert_new_ablock(struct dm_array_info *info, size_t size_of_block,
                             uint32_t max_entries,
-                            unsigned block_index, uint32_t nr,
+                            unsigned int block_index, uint32_t nr,
                             const void *value, dm_block_t *root)
 {
        int r;
@@ -365,8 +367,8 @@ static int insert_new_ablock(struct dm_array_info *info, size_t size_of_block,
 }
 
 static int insert_full_ablocks(struct dm_array_info *info, size_t size_of_block,
-                              unsigned begin_block, unsigned end_block,
-                              unsigned max_entries, const void *value,
+                              unsigned int begin_block, unsigned int end_block,
+                              unsigned int max_entries, const void *value,
                               dm_block_t *root)
 {
        int r = 0;
@@ -402,20 +404,20 @@ struct resize {
        /*
         * Maximum nr entries in an array block.
         */
-       unsigned max_entries;
+       unsigned int max_entries;
 
        /*
         * nr of completely full blocks in the array.
         *
         * 'old' refers to before the resize, 'new' after.
         */
-       unsigned old_nr_full_blocks, new_nr_full_blocks;
+       unsigned int old_nr_full_blocks, new_nr_full_blocks;
 
        /*
         * Number of entries in the final block.  0 iff only full blocks in
         * the array.
         */
-       unsigned old_nr_entries_in_last_block, new_nr_entries_in_last_block;
+       unsigned int old_nr_entries_in_last_block, new_nr_entries_in_last_block;
 
        /*
         * The default value used when growing the array.
@@ -430,13 +432,14 @@ struct resize {
  * begin_index - the index of the first array block to remove.
  * end_index - the one-past-the-end value.  ie. this block is not removed.
  */
-static int drop_blocks(struct resize *resize, unsigned begin_index,
-                      unsigned end_index)
+static int drop_blocks(struct resize *resize, unsigned int begin_index,
+                      unsigned int end_index)
 {
        int r;
 
        while (begin_index != end_index) {
                uint64_t key = begin_index++;
+
                r = dm_btree_remove(&resize->info->btree_info, resize->root,
                                    &key, &resize->root);
                if (r)
@@ -449,8 +452,8 @@ static int drop_blocks(struct resize *resize, unsigned begin_index,
 /*
  * Calculates how many blocks are needed for the array.
  */
-static unsigned total_nr_blocks_needed(unsigned nr_full_blocks,
-                                      unsigned nr_entries_in_last_block)
+static unsigned int total_nr_blocks_needed(unsigned int nr_full_blocks,
+                                      unsigned int nr_entries_in_last_block)
 {
        return nr_full_blocks + (nr_entries_in_last_block ? 1 : 0);
 }
@@ -461,7 +464,7 @@ static unsigned total_nr_blocks_needed(unsigned nr_full_blocks,
 static int shrink(struct resize *resize)
 {
        int r;
-       unsigned begin, end;
+       unsigned int begin, end;
        struct dm_block *block;
        struct array_block *ab;
 
@@ -527,7 +530,7 @@ static int grow_add_tail_block(struct resize *resize)
 static int grow_needs_more_blocks(struct resize *resize)
 {
        int r;
-       unsigned old_nr_blocks = resize->old_nr_full_blocks;
+       unsigned int old_nr_blocks = resize->old_nr_full_blocks;
 
        if (resize->old_nr_entries_in_last_block > 0) {
                old_nr_blocks++;
@@ -569,11 +572,11 @@ static int grow(struct resize *resize)
  * These are the value_type functions for the btree elements, which point
  * to array blocks.
  */
-static void block_inc(void *context, const void *value, unsigned count)
+static void block_inc(void *context, const void *value, unsigned int count)
 {
        const __le64 *block_le = value;
        struct dm_array_info *info = context;
-       unsigned i;
+       unsigned int i;
 
        for (i = 0; i < count; i++, block_le++)
                dm_tm_inc(info->btree_info.tm, le64_to_cpu(*block_le));
@@ -618,9 +621,10 @@ static void __block_dec(void *context, const void *value)
        dm_tm_dec(info->btree_info.tm, b);
 }
 
-static void block_dec(void *context, const void *value, unsigned count)
+static void block_dec(void *context, const void *value, unsigned int count)
 {
-       unsigned i;
+       unsigned int i;
+
        for (i = 0; i < count; i++, value += sizeof(__le64))
                __block_dec(context, value);
 }
@@ -691,19 +695,21 @@ static int array_resize(struct dm_array_info *info, dm_block_t root,
 int dm_array_resize(struct dm_array_info *info, dm_block_t root,
                    uint32_t old_size, uint32_t new_size,
                    const void *value, dm_block_t *new_root)
-                   __dm_written_to_disk(value)
+       __dm_written_to_disk(value)
 {
        int r = array_resize(info, root, old_size, new_size, value, new_root);
+
        __dm_unbless_for_disk(value);
        return r;
 }
 EXPORT_SYMBOL_GPL(dm_array_resize);
 
 static int populate_ablock_with_values(struct dm_array_info *info, struct array_block *ab,
-                                      value_fn fn, void *context, unsigned base, unsigned new_nr)
+                                      value_fn fn, void *context,
+                                      unsigned int base, unsigned int new_nr)
 {
        int r;
-       unsigned i;
+       unsigned int i;
        struct dm_btree_value_type *vt = &info->value_type;
 
        BUG_ON(le32_to_cpu(ab->nr_entries));
@@ -728,7 +734,7 @@ int dm_array_new(struct dm_array_info *info, dm_block_t *root,
        int r;
        struct dm_block *block;
        struct array_block *ab;
-       unsigned block_index, end_block, size_of_block, max_entries;
+       unsigned int block_index, end_block, size_of_block, max_entries;
 
        r = dm_array_empty(info, root);
        if (r)
@@ -776,7 +782,7 @@ int dm_array_get_value(struct dm_array_info *info, dm_block_t root,
        struct dm_block *block;
        struct array_block *ab;
        size_t size_of_block;
-       unsigned entry, max_entries;
+       unsigned int entry, max_entries;
 
        size_of_block = dm_bm_block_size(dm_tm_get_bm(info->btree_info.tm));
        max_entries = calc_max_entries(info->value_type.size, size_of_block);
@@ -804,8 +810,8 @@ static int array_set_value(struct dm_array_info *info, dm_block_t root,
        struct dm_block *block;
        struct array_block *ab;
        size_t size_of_block;
-       unsigned max_entries;
-       unsigned entry;
+       unsigned int max_entries;
+       unsigned int entry;
        void *old_value;
        struct dm_btree_value_type *vt = &info->value_type;
 
@@ -840,7 +846,7 @@ out:
 
 int dm_array_set_value(struct dm_array_info *info, dm_block_t root,
                 uint32_t index, const void *value, dm_block_t *new_root)
-                __dm_written_to_disk(value)
+       __dm_written_to_disk(value)
 {
        int r;
 
@@ -861,9 +867,9 @@ static int walk_ablock(void *context, uint64_t *keys, void *leaf)
        struct walk_info *wi = context;
 
        int r;
-       unsigned i;
+       unsigned int i;
        __le64 block_le;
-       unsigned nr_entries, max_entries;
+       unsigned int nr_entries, max_entries;
        struct dm_block *block;
        struct array_block *ab;