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lightnvm: make nvm_map_* return void

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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: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Matias Bjørling 2017-01-31 13:17:13 +01:00 committed by Jens Axboe
parent 8f4fe008fb
commit 61a561d8d7
1 changed files with 9 additions and 32 deletions
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41
drivers/lightnvm/core.c
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@ -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));