From: Mike Dunn Date: Tue, 11 Sep 2012 15:59:03 +0000 (-0700) Subject: mtd: nand: expand description of read_page method in comment header X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5ca7f41528922c90da3ae3b917dc904047513be2;p=linux-beck.git mtd: nand: expand description of read_page method in comment header In the absence of any formal documentation of the nand interface, I thought this patch to the header file might be helpful. Signed-off-by: Mike Dunn Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- 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