From: Brian Norris Date: Fri, 9 Dec 2011 19:45:14 +0000 (-0800) Subject: libmtd: allow write operations when MEMWRITE is not supported X-Git-Tag: v1.4.9~1 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ec985197e7cd6ec33f41273bff7afd4c4f454b87;p=mtd-utils.git libmtd: allow write operations when MEMWRITE is not supported MEMWRITE is a recently introduced write interface for MTD; however, it is only supported on NAND flash. mtd-utils should fall back to old write methods when either ENOTTY or EOPNOTSUPP are returned. This is a showstopper when, for instance, using ubiformat on NOR, which don't have a mtd->write_oob interface (and thus don't support MEMWRITE): ubiformat: formatting eraseblock 2 -- 1 % complete libmtd: error!: MEMWRITE ioctl failed for eraseblock 2 (mtd3) error 122 (Operation not supported) Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy --- diff --git a/lib/libmtd.c b/lib/libmtd.c index 1b16de5..9b247ae 100644 --- a/lib/libmtd.c +++ b/lib/libmtd.c @@ -1151,7 +1151,7 @@ int mtd_write(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb, ret = ioctl(fd, MEMWRITE, &ops); if (ret == 0) return 0; - else if (errno != ENOTTY) + else if (errno != ENOTTY && errno != EOPNOTSUPP) return mtd_ioctl_error(mtd, eb, "MEMWRITE"); /* Fall back to old methods if necessary */