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-rw-r--r--include/linux/mtd/nand.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 8f99d3621e12..d245199ccaf3 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -326,8 +326,10 @@ struct nand_hw_control {
* @read_page_raw: function to read a raw page without ECC
* @write_page_raw: function to write a raw page without ECC
* @read_page: function to read a page according to the ECC generator
- * requirements.
- * @read_subpage: function to read parts of the page covered by ECC.
+ * requirements; returns maximum number of bitflips corrected in
+ * any single ECC step, 0 if bitflips uncorrectable, -EIO hw error
+ * @read_subpage: function to read parts of the page covered by ECC;
+ * returns same as read_page()
* @write_page: function to write a page according to the ECC generator
* requirements.
* @write_oob_raw: function to write chip OOB data without ECC