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authorMatias Bjørling <m@bjorling.me>2016-07-07 10:54:22 +0300
committerJens Axboe <axboe@fb.com>2016-07-07 17:51:52 +0300
commit8680f165eaa56cc9812d7d9b4903f449df0f6a45 (patch)
tree78a0e8a717942fb26dacae7ba44275ff58e289fa /drivers/lightnvm
parent24d4a7d721484498462bc3117d6d5c88ca623574 (diff)
downloadlinux-8680f165eaa56cc9812d7d9b4903f449df0f6a45.tar.xz
lightnvm: make ppa_list const in nvm_set_rqd_list
The passed by reference ppa list in nvm_set_rqd_list() is updated when multiple planes are available. In that case, each PPA plane is incremented when the device side PPA list is created. This prevents the caller to rely on the PPA list to be unmodified after a call. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r--drivers/lightnvm/core.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index ddc809803084..00b64f78887d 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -237,9 +237,10 @@ void nvm_generic_to_addr_mode(struct nvm_dev *dev, struct nvm_rq *rqd)
EXPORT_SYMBOL(nvm_generic_to_addr_mode);
int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd,
- struct ppa_addr *ppas, int nr_ppas, int vblk)
+ const struct ppa_addr *ppas, int nr_ppas, int vblk)
{
int i, plane_cnt, pl_idx;
+ struct ppa_addr ppa;
if ((!vblk || dev->plane_mode == NVM_PLANE_SINGLE) && nr_ppas == 1) {
rqd->nr_ppas = nr_ppas;
@@ -264,8 +265,9 @@ int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd,
for (i = 0; i < nr_ppas; i++) {
for (pl_idx = 0; pl_idx < plane_cnt; pl_idx++) {
- ppas[i].g.pl = pl_idx;
- rqd->ppa_list[(pl_idx * nr_ppas) + i] = ppas[i];
+ ppa = ppas[i];
+ ppa.g.pl = pl_idx;
+ rqd->ppa_list[(pl_idx * nr_ppas) + i] = ppa;
}
}
}