Commit 4264c980 authored by Matias Bjørling's avatar Matias Bjørling Committed by Jens Axboe
Browse files

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: default avatarMatias Bjørling <m@bjorling.me>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 73387e7b

drivers/lightnvm/core.c

+10 −0
Original line number Diff line number Diff line
@@ -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)