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| author | david.oberhollenzer@sigma-star.at <david.oberhollenzer@sigma-star.at> | 2015-03-27 01:59:50 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2015-04-13 22:05:17 +0300 |
| commit | 502690674281a047abd45f81e64c498bc23a8bb3 (patch) | |
| tree | 5aa08ca80d7de94bf0b3050a7f458ad0ed25d004 /drivers/mtd/ubi/io.c | |
| parent | 1a7e985dd1bf5939af0f56bbd6d13d2caf48dd63 (diff) | |
| download | linux-502690674281a047abd45f81e64c498bc23a8bb3.tar.xz | |
UBI: power cut emulation for testing
Emulate random power cuts by switching device to ro after a number of
writes to allow simple power cut testing with nand-sim.
Maximum and minimum number of successful writes before power cut and
what kind of writes (EC header, VID header or none) to interrupt
configurable via debugfs.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/ubi/io.c')
| -rw-r--r-- | drivers/mtd/ubi/io.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index ed0bcb35472f..5bbd1f094f4e 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -859,6 +859,9 @@ int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum, if (err) return err; + if (ubi_dbg_power_cut(ubi, POWER_CUT_EC_WRITE)) + return -EROFS; + err = ubi_io_write(ubi, ec_hdr, pnum, 0, ubi->ec_hdr_alsize); return err; } @@ -1106,6 +1109,9 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, if (err) return err; + if (ubi_dbg_power_cut(ubi, POWER_CUT_VID_WRITE)) + return -EROFS; + p = (char *)vid_hdr - ubi->vid_hdr_shift; err = ubi_io_write(ubi, p, pnum, ubi->vid_hdr_aloffset, ubi->vid_hdr_alsize); |