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Commit 61a561d8 authored by Matias Bjørling's avatar Matias Bjørling Committed by Jens Axboe
Browse files

lightnvm: make nvm_map_* return void 



The only check there was done was a debugging check. Remove it and
replace the return value with void to reduce error checking.

Signed-off-by: default avatarMatias Bjørling <matias@cnexlabs.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 8f4fe008

drivers/lightnvm/core.c

+9 −32
Original line number Diff line number Diff line
@@ -407,31 +407,17 @@ static int nvm_register_map(struct nvm_dev *dev) 
	return -ENOMEM;

}



static int nvm_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)

static void nvm_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)

{

	struct nvm_dev_map *dev_map = tgt_dev->map;

	struct nvm_ch_map *ch_map = &dev_map->chnls[p->g.ch];

	int lun_off = ch_map->lun_offs[p->g.lun];

	struct nvm_dev *dev = tgt_dev->parent;

	struct nvm_dev_map *dev_rmap = dev->rmap;

	struct nvm_ch_map *ch_rmap;

	int lun_roff;



	p->g.ch += ch_map->ch_off;

	p->g.lun += lun_off;



	ch_rmap = &dev_rmap->chnls[p->g.ch];

	lun_roff = ch_rmap->lun_offs[p->g.lun];



	if (unlikely(ch_rmap->ch_off < 0 || lun_roff < 0)) {

		pr_err("nvm: corrupted device partition table\n");

		return -EINVAL;

}



	return 0;

}



static int nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)

static void nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)

{

	struct nvm_dev *dev = tgt_dev->parent;

	struct nvm_dev_map *dev_rmap = dev->rmap;
@@ -440,34 +426,27 @@ static int nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p) 


	p->g.ch -= ch_rmap->ch_off;

	p->g.lun -= lun_roff;



	return 0;

}



static int nvm_trans_rq(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,

static void nvm_trans_rq(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,

			int flag)

{

	int i;

	int ret;



	if (rqd->nr_ppas == 1) {

		if (flag == TRANS_TGT_TO_DEV)

			return nvm_map_to_dev(tgt_dev, &rqd->ppa_addr);

			nvm_map_to_dev(tgt_dev, &rqd->ppa_addr);

		else

			return nvm_map_to_tgt(tgt_dev, &rqd->ppa_addr);

			nvm_map_to_tgt(tgt_dev, &rqd->ppa_addr);

		return;

	}



	for (i = 0; i < rqd->nr_ppas; i++) {

		if (flag == TRANS_TGT_TO_DEV)

			ret = nvm_map_to_dev(tgt_dev, &rqd->ppa_list[i]);

			nvm_map_to_dev(tgt_dev, &rqd->ppa_list[i]);

		else

			ret = nvm_map_to_tgt(tgt_dev, &rqd->ppa_list[i]);



		if (ret)

			break;

			nvm_map_to_tgt(tgt_dev, &rqd->ppa_list[i]);

	}



	return ret;

}



static struct ppa_addr nvm_trans_ppa(struct nvm_tgt_dev *tgt_dev,
@@ -665,9 +644,7 @@ int nvm_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas, int flags) 
	if (!dev->ops->erase_block)

		return 0;



	ret = nvm_map_to_dev(tgt_dev, ppas);

	if (ret)

		return ret;

	nvm_map_to_dev(tgt_dev, ppas);



	memset(&rqd, 0, sizeof(struct nvm_rq));