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| author | Matias Bjørling <m@bjorling.me> | 2015-11-16 14:34:41 (GMT) |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-11-16 22:20:30 (GMT) |
| commit | 4264c980e3e9bb904b7f41dc9c64786cc5466bee (patch) | |
| tree | 48cd613d42b56125c2363a9bdc5cde598089d78c | |
| parent | 73387e7bed260c89628fc6a4e3632b45be9776b0 (diff) | |
| download | linux-4264c980e3e9bb904b7f41dc9c64786cc5466bee.tar.xz | |
lightnvm: check for NAND flash and its type
Only NAND flash with SLC and MLC is supported. Make sure to not try to
initialize TLC memory or other non-volatile memory types.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | drivers/lightnvm/core.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index f659e60..0985a03 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -185,6 +185,16 @@ static int nvm_core_init(struct nvm_dev *dev) dev->plane_mode = NVM_PLANE_SINGLE; dev->max_rq_size = dev->ops->max_phys_sect * dev->sec_size; + if (grp->mtype != 0) { + pr_err("nvm: memory type not supported\n"); + return -EINVAL; + } + + if (grp->fmtype != 0 && grp->fmtype != 1) { + pr_err("nvm: flash type not supported\n"); + return -EINVAL; + } + if (grp->mpos & 0x020202) dev->plane_mode = NVM_PLANE_DOUBLE; if (grp->mpos & 0x040404) |