dm: remove unnecessary (void*) conversions

Pointer variables of void * type do not require type cast.
Signed-off-by: Yu Zhe <yuzhe@nfschina.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

drivers/md/dm-integrity.c

@@ -3118,7 +3118,7 @@ static int dm_integrity_reboot(struct notifier_block *n, unsigned long code, voi
 
 static void dm_integrity_postsuspend(struct dm_target *ti)
 {
-	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;
+	struct dm_integrity_c *ic = ti->private;
 	int r;
 
 	WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier));
@@ -3167,7 +3167,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
 
 static void dm_integrity_resume(struct dm_target *ti)
 {
-	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;
+	struct dm_integrity_c *ic = ti->private;
 	__u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors);
 	int r;
 
@@ -3290,7 +3290,7 @@ static void dm_integrity_resume(struct dm_target *ti)
 static void dm_integrity_status(struct dm_target *ti, status_type_t type,
 				unsigned int status_flags, char *result, unsigned int maxlen)
 {
-	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;
+	struct dm_integrity_c *ic = ti->private;
 	unsigned int arg_count;
 	size_t sz = 0;
 

drivers/md/dm-io.c

@@ -187,7 +187,7 @@ static void list_get_page(struct dpages *dp,
 		  struct page **p, unsigned long *len, unsigned int *offset)
 {
 	unsigned int o = dp->context_u;
-	struct page_list *pl = (struct page_list *) dp->context_ptr;
+	struct page_list *pl = dp->context_ptr;
 
 	*p = pl->page;
 	*len = PAGE_SIZE - o;
@@ -196,7 +196,7 @@ static void list_get_page(struct dpages *dp,
 
 static void list_next_page(struct dpages *dp)
 {
-	struct page_list *pl = (struct page_list *) dp->context_ptr;
+	struct page_list *pl = dp->context_ptr;
 
 	dp->context_ptr = pl->next;
 	dp->context_u = 0;

drivers/md/dm-kcopyd.c

@@ -519,7 +519,7 @@ static int run_complete_job(struct kcopyd_job *job)
 
 static void complete_io(unsigned long error, void *context)
 {
-	struct kcopyd_job *job = (struct kcopyd_job *) context;
+	struct kcopyd_job *job = context;
 	struct dm_kcopyd_client *kc = job->kc;
 
 	io_job_finish(kc->throttle);
@@ -696,7 +696,7 @@ static void segment_complete(int read_err, unsigned long write_err,
 	/* FIXME: tidy this function */
 	sector_t progress = 0;
 	sector_t count = 0;
-	struct kcopyd_job *sub_job = (struct kcopyd_job *) context;
+	struct kcopyd_job *sub_job = context;
 	struct kcopyd_job *job = sub_job->master_job;
 	struct dm_kcopyd_client *kc = job->kc;
 

drivers/md/dm-linear.c

@@ -72,7 +72,7 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 
 static void linear_dtr(struct dm_target *ti)
 {
-	struct linear_c *lc = (struct linear_c *) ti->private;
+	struct linear_c *lc = ti->private;
 
 	dm_put_device(ti, lc->dev);
 	kfree(lc);
@@ -98,7 +98,7 @@ static int linear_map(struct dm_target *ti, struct bio *bio)
 static void linear_status(struct dm_target *ti, status_type_t type,
 			  unsigned int status_flags, char *result, unsigned int maxlen)
 {
-	struct linear_c *lc = (struct linear_c *) ti->private;
+	struct linear_c *lc = ti->private;
 	size_t sz = 0;
 
 	switch (type) {
@@ -120,7 +120,7 @@ static void linear_status(struct dm_target *ti, status_type_t type,
 
 static int linear_prepare_ioctl(struct dm_target *ti, struct block_device **bdev)
 {
-	struct linear_c *lc = (struct linear_c *) ti->private;
+	struct linear_c *lc = ti->private;
 	struct dm_dev *dev = lc->dev;
 
 	*bdev = dev->bdev;

drivers/md/dm-log-writes.c

@@ -429,7 +429,7 @@ static inline sector_t logdev_last_sector(struct log_writes_c *lc)
 
 static int log_writes_kthread(void *arg)
 {
-	struct log_writes_c *lc = (struct log_writes_c *)arg;
+	struct log_writes_c *lc = arg;
 	sector_t sector = 0;
 
 	while (!kthread_should_stop()) {

drivers/md/dm-log.c

@@ -530,7 +530,7 @@ static void destroy_log_context(struct log_c *lc)
 
 static void core_dtr(struct dm_dirty_log *log)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	vfree(lc->clean_bits);
 	destroy_log_context(lc);
@@ -569,7 +569,7 @@ static int disk_ctr(struct dm_dirty_log *log, struct dm_target *ti,
 
 static void disk_dtr(struct dm_dirty_log *log)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	dm_put_device(lc->ti, lc->log_dev);
 	vfree(lc->disk_header);
@@ -590,7 +590,7 @@ static int disk_resume(struct dm_dirty_log *log)
 {
 	int r;
 	unsigned int i;
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 	size_t size = lc->bitset_uint32_count * sizeof(uint32_t);
 
 	/* read the disk header */
@@ -652,14 +652,14 @@ static int disk_resume(struct dm_dirty_log *log)
 
 static uint32_t core_get_region_size(struct dm_dirty_log *log)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	return lc->region_size;
 }
 
 static int core_resume(struct dm_dirty_log *log)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	lc->sync_search = 0;
 	return 0;
@@ -667,14 +667,14 @@ static int core_resume(struct dm_dirty_log *log)
 
 static int core_is_clean(struct dm_dirty_log *log, region_t region)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	return log_test_bit(lc->clean_bits, region);
 }
 
 static int core_in_sync(struct dm_dirty_log *log, region_t region, int block)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	return log_test_bit(lc->sync_bits, region);
 }
@@ -727,14 +727,14 @@ static int disk_flush(struct dm_dirty_log *log)
 
 static void core_mark_region(struct dm_dirty_log *log, region_t region)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	log_clear_bit(lc, lc->clean_bits, region);
 }
 
 static void core_clear_region(struct dm_dirty_log *log, region_t region)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	if (likely(!lc->flush_failed))
 		log_set_bit(lc, lc->clean_bits, region);
@@ -742,7 +742,7 @@ static void core_clear_region(struct dm_dirty_log *log, region_t region)
 
 static int core_get_resync_work(struct dm_dirty_log *log, region_t *region)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	if (lc->sync_search >= lc->region_count)
 		return 0;
@@ -765,7 +765,7 @@ static int core_get_resync_work(struct dm_dirty_log *log, region_t *region)
 static void core_set_region_sync(struct dm_dirty_log *log, region_t region,
 				 int in_sync)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	log_clear_bit(lc, lc->recovering_bits, region);
 	if (in_sync) {
@@ -779,7 +779,7 @@ static void core_set_region_sync(struct dm_dirty_log *log, region_t region,
 
 static region_t core_get_sync_count(struct dm_dirty_log *log)
 {
-	struct log_c *lc = (struct log_c *) log->context;
+	struct log_c *lc = log->context;
 
 	return lc->sync_count;
 }

drivers/md/dm-raid1.c

@@ -604,7 +604,7 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads)
 static void write_callback(unsigned long error, void *context)
 {
 	unsigned int i;
-	struct bio *bio = (struct bio *) context;
+	struct bio *bio = context;
 	struct mirror_set *ms;
 	int should_wake = 0;
 	unsigned long flags;
@@ -1180,7 +1180,7 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 
 static void mirror_dtr(struct dm_target *ti)
 {
-	struct mirror_set *ms = (struct mirror_set *) ti->private;
+	struct mirror_set *ms = ti->private;
 
 	del_timer_sync(&ms->timer);
 	flush_workqueue(ms->kmirrord_wq);
@@ -1246,7 +1246,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio,
 		blk_status_t *error)
 {
 	int rw = bio_data_dir(bio);
-	struct mirror_set *ms = (struct mirror_set *) ti->private;
+	struct mirror_set *ms = ti->private;
 	struct mirror *m = NULL;
 	struct dm_bio_details *bd = NULL;
 	struct dm_raid1_bio_record *bio_record =
@@ -1311,7 +1311,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio,
 
 static void mirror_presuspend(struct dm_target *ti)
 {
-	struct mirror_set *ms = (struct mirror_set *) ti->private;
+	struct mirror_set *ms = ti->private;
 	struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
 
 	struct bio_list holds;
@@ -1407,7 +1407,7 @@ static void mirror_status(struct dm_target *ti, status_type_t type,
 {
 	unsigned int m, sz = 0;
 	int num_feature_args = 0;
-	struct mirror_set *ms = (struct mirror_set *) ti->private;
+	struct mirror_set *ms = ti->private;
 	struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
 	char buffer[MAX_NR_MIRRORS + 1];
 

drivers/md/dm-snap-persistent.c

@@ -567,7 +567,7 @@ static int read_exceptions(struct pstore *ps,
 
 static struct pstore *get_info(struct dm_exception_store *store)
 {
-	return (struct pstore *) store->context;
+	return store->context;
 }
 
 static void persistent_usage(struct dm_exception_store *store,

drivers/md/dm-stripe.c

@@ -189,7 +189,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 static void stripe_dtr(struct dm_target *ti)
 {
 	unsigned int i;
-	struct stripe_c *sc = (struct stripe_c *) ti->private;
+	struct stripe_c *sc = ti->private;
 
 	for (i = 0; i < sc->stripes; i++)
 		dm_put_device(ti, sc->stripe[i].dev);
@@ -360,7 +360,7 @@ static size_t stripe_dax_recovery_write(struct dm_target *ti, pgoff_t pgoff,
 static void stripe_status(struct dm_target *ti, status_type_t type,
 			  unsigned int status_flags, char *result, unsigned int maxlen)
 {
-	struct stripe_c *sc = (struct stripe_c *) ti->private;
+	struct stripe_c *sc = ti->private;
 	unsigned int sz = 0;
 	unsigned int i;
 

drivers/md/dm-verity-fec.c

@@ -567,14 +567,14 @@ void verity_fec_dtr(struct dm_verity *v)
 
 static void *fec_rs_alloc(gfp_t gfp_mask, void *pool_data)
 {
-	struct dm_verity *v = (struct dm_verity *)pool_data;
+	struct dm_verity *v = pool_data;
 
 	return init_rs_gfp(8, 0x11d, 0, 1, v->fec->roots, gfp_mask);
 }
 
 static void fec_rs_free(void *element, void *pool_data)
 {
-	struct rs_control *rs = (struct rs_control *)element;
+	struct rs_control *rs = element;
 
 	if (rs)
 		free_rs(rs);

drivers/md/dm-zoned-metadata.c

@@ -1701,7 +1701,7 @@ static int dmz_load_mapping(struct dmz_metadata *zmd)
 			if (IS_ERR(dmap_mblk))
 				return PTR_ERR(dmap_mblk);
 			zmd->map_mblk[i] = dmap_mblk;
-			dmap = (struct dmz_map *) dmap_mblk->data;
+			dmap = dmap_mblk->data;
 			i++;
 			e = 0;
 		}
@@ -1832,7 +1832,7 @@ static void dmz_set_chunk_mapping(struct dmz_metadata *zmd, unsigned int chunk,
 				  unsigned int dzone_id, unsigned int bzone_id)
 {
 	struct dmz_mblock *dmap_mblk = zmd->map_mblk[chunk >> DMZ_MAP_ENTRIES_SHIFT];
-	struct dmz_map *dmap = (struct dmz_map *) dmap_mblk->data;
+	struct dmz_map *dmap = dmap_mblk->data;
 	int map_idx = chunk & DMZ_MAP_ENTRIES_MASK;
 
 	dmap[map_idx].dzone_id = cpu_to_le32(dzone_id);
@@ -2045,7 +2045,7 @@ struct dm_zone *dmz_get_chunk_mapping(struct dmz_metadata *zmd,
 				      unsigned int chunk, enum req_op op)
 {
 	struct dmz_mblock *dmap_mblk = zmd->map_mblk[chunk >> DMZ_MAP_ENTRIES_SHIFT];
-	struct dmz_map *dmap = (struct dmz_map *) dmap_mblk->data;
+	struct dmz_map *dmap = dmap_mblk->data;
 	int dmap_idx = chunk & DMZ_MAP_ENTRIES_MASK;
 	unsigned int dzone_id;
 	struct dm_zone *dzone = NULL;