Use an enum to differentiate the type of I/O (reading or writing a page). Also update the request iterator.
This is a port of linux patch 701981cab01696584a12e5f0e7c2ad931a326059 created by Miquel Raynal miquel.raynal@bootlin.com
Signed-off-by: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu --- drivers/mtd/nand/spi/core.c | 4 ++-- include/linux/mtd/nand.h | 18 ++++++++++++++++-- 2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index adc67d7a40d..f10a3dbfdff 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -519,7 +519,7 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from, mutex_lock(&spinand->lock); #endif
- nanddev_io_for_each_page(nand, from, ops, &iter) { + nanddev_io_for_each_page(nand, NAND_PAGE_READ, from, ops, &iter) { schedule(); ret = spinand_select_target(spinand, iter.req.pos.target); if (ret) @@ -571,7 +571,7 @@ static int spinand_mtd_write(struct mtd_info *mtd, loff_t to, mutex_lock(&spinand->lock); #endif
- nanddev_io_for_each_page(nand, to, ops, &iter) { + nanddev_io_for_each_page(nand, NAND_PAGE_WRITE, to, ops, &iter) { schedule(); ret = spinand_select_target(spinand, iter.req.pos.target); if (ret) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 651f8706df5..0afdaed5715 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -80,8 +80,19 @@ struct nand_pos { unsigned int page; };
+/** + * enum nand_page_io_req_type - Direction of an I/O request + * @NAND_PAGE_READ: from the chip, to the controller + * @NAND_PAGE_WRITE: from the controller, to the chip + */ +enum nand_page_io_req_type { + NAND_PAGE_READ = 0, + NAND_PAGE_WRITE, +}; + /** * struct nand_page_io_req - NAND I/O request object + * @type: the type of page I/O: read or write * @pos: the position this I/O request is targeting * @dataoffs: the offset within the page * @datalen: number of data bytes to read from/write to this page @@ -97,6 +108,7 @@ struct nand_pos { * specific commands/operations. */ struct nand_page_io_req { + enum nand_page_io_req_type type; struct nand_pos pos; unsigned int dataoffs; unsigned int datalen; @@ -613,11 +625,13 @@ static inline void nanddev_pos_next_page(struct nand_device *nand, * layer. */ static inline void nanddev_io_iter_init(struct nand_device *nand, + enum nand_page_io_req_type reqtype, loff_t offs, struct mtd_oob_ops *req, struct nand_io_iter *iter) { struct mtd_info *mtd = nanddev_to_mtd(nand);
+ iter->req.type = reqtype; iter->req.mode = req->mode; iter->req.dataoffs = nanddev_offs_to_pos(nand, offs, &iter->req.pos); iter->req.ooboffs = req->ooboffs; @@ -687,8 +701,8 @@ static inline bool nanddev_io_iter_end(struct nand_device *nand, * * Should be used for iterate over pages that are contained in an MTD request. */ -#define nanddev_io_for_each_page(nand, start, req, iter) \ - for (nanddev_io_iter_init(nand, start, req, iter); \ +#define nanddev_io_for_each_page(nand, type, start, req, iter) \ + for (nanddev_io_iter_init(nand, type, start, req, iter); \ !nanddev_io_iter_end(nand, iter); \ nanddev_io_iter_next_page(nand, iter))