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.ray...@bootlin.com>
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevets...@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 ea00cd7dcf0..8f227ce81fa 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -523,7 +523,7 @@ 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)
@@ -575,7 +575,7 @@ 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))
--
2.45.2
