This series adds a nand write variant which implements the procedure reccomended in the UBI FAQ [1] of dropping trailing pages of eraseblocks containing entirely 0xff's.
[1] http://www.linux-mtd.infradead.org/doc/ubi.html#L_flasher_algo
Changes since v3: * rebased to nand-flash/next where patches 1/4 and 2/4 [v3] were already applied * added patch 1/3 [v4] to treat WITH_YAFFS_OOB as a mode * renumbered 3/4 and 4/4 [v3] to 1/3 and 3/3 [v4], respectively * remove uneccessary cast * wrapped README at 80 columns * prevent access past input buffer end
Changes since v2: * dropped WITH_DEFAULTS in favour of '0' * moved copyright header to nand_util patch * added write.trimffs variant to README.nand
Changes since v1: * renamed to 'trimffs' from 'ubi' * wrapped the new feature in #ifdefs * don't make it default for jffs -- patch dropped * attribution of the drop_ffs() function from mtd-utils to Artem
Ben Gardiner (3): [v4] nand_util: treat WITH_YAFFS_OOB as a mode [v4] nand_util: drop trailing all-0xff pages if requested [v4] cmd_nand: add nand write.trimffs command
common/cmd_nand.c | 16 +++++++++++++++ doc/README.nand | 10 +++++++++ drivers/mtd/nand/nand_util.c | 43 +++++++++++++++++++++++++++++++++++++++-- include/nand.h | 5 +++- 4 files changed, 70 insertions(+), 4 deletions(-)