mtd: nand: Let ECC engines advertize the exact number of steps

This is an information that might be useful for specific uses, so
export it, which might avoid having to guess the number of steps when
necessary.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd Torpedo
Link: https://lore.kernel.org/linux-mtd/20210127203020.9574-2-miquel.raynal@bootlin.com

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 414f8a4d28538c04a197977d9d7bb5b9351534df..632becb13b46020fff630920bc1c5200dd0c7eb0 100644 (file)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -231,12 +231,14 @@ struct nand_ops {
 /**
  * struct nand_ecc_context - Context for the ECC engine
  * @conf: basic ECC engine parameters
+ * @nsteps: number of ECC steps
  * @total: total number of bytes used for storing ECC codes, this is used by
  *         generic OOB layouts
  * @priv: ECC engine driver private data
  */
 struct nand_ecc_context {
        struct nand_ecc_props conf;
+       unsigned int nsteps;
        unsigned int total;
        void *priv;
 };