summaryrefslogtreecommitdiffstats
path: root/drivers/mtd/ubi/io.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/ubi/io.c')
-rw-r--r--drivers/mtd/ubi/io.c86
1 files changed, 81 insertions, 5 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 01b6448612..a4999bce43 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -195,7 +195,19 @@ retry:
if (ubi_dbg_is_bitflip(ubi)) {
dbg_gen("bit-flip (emulated)");
- err = UBI_IO_BITFLIPS;
+ return UBI_IO_BITFLIPS;
+ }
+
+ if (ubi_dbg_is_read_failure(ubi, MASK_READ_FAILURE)) {
+ ubi_warn(ubi, "cannot read %d bytes from PEB %d:%d (emulated)",
+ len, pnum, offset);
+ return -EIO;
+ }
+
+ if (ubi_dbg_is_eccerr(ubi)) {
+ ubi_warn(ubi, "ECC error (emulated) while reading %d bytes from PEB %d:%d, read %zd bytes",
+ len, pnum, offset, read);
+ return -EBADMSG;
}
}
@@ -782,7 +794,36 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum,
* If there was %-EBADMSG, but the header CRC is still OK, report about
* a bit-flip to force scrubbing on this PEB.
*/
- return read_err ? UBI_IO_BITFLIPS : 0;
+ if (read_err)
+ return UBI_IO_BITFLIPS;
+
+ if (ubi_dbg_is_read_failure(ubi, MASK_READ_FAILURE_EC)) {
+ ubi_warn(ubi, "cannot read EC header from PEB %d (emulated)",
+ pnum);
+ return -EIO;
+ }
+
+ if (ubi_dbg_is_ff(ubi, MASK_IO_FF_EC)) {
+ ubi_warn(ubi, "bit-all-ff (emulated)");
+ return UBI_IO_FF;
+ }
+
+ if (ubi_dbg_is_ff_bitflips(ubi, MASK_IO_FF_BITFLIPS_EC)) {
+ ubi_warn(ubi, "bit-all-ff with error reported by MTD driver (emulated)");
+ return UBI_IO_FF_BITFLIPS;
+ }
+
+ if (ubi_dbg_is_bad_hdr(ubi, MASK_BAD_HDR_EC)) {
+ ubi_warn(ubi, "bad_hdr (emulated)");
+ return UBI_IO_BAD_HDR;
+ }
+
+ if (ubi_dbg_is_bad_hdr_ebadmsg(ubi, MASK_BAD_HDR_EBADMSG_EC)) {
+ ubi_warn(ubi, "bad_hdr with ECC error (emulated)");
+ return UBI_IO_BAD_HDR_EBADMSG;
+ }
+
+ return 0;
}
/**
@@ -821,8 +862,11 @@ 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))
+ if (ubi_dbg_is_power_cut(ubi, MASK_POWER_CUT_EC)) {
+ ubi_warn(ubi, "emulating a power cut when writing EC header");
+ ubi_ro_mode(ubi);
return -EROFS;
+ }
err = ubi_io_write(ubi, ec_hdr, pnum, 0, ubi->ec_hdr_alsize);
return err;
@@ -1029,7 +1073,36 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum,
return -EINVAL;
}
- return read_err ? UBI_IO_BITFLIPS : 0;
+ if (read_err)
+ return UBI_IO_BITFLIPS;
+
+ if (ubi_dbg_is_read_failure(ubi, MASK_READ_FAILURE_VID)) {
+ ubi_warn(ubi, "cannot read VID header from PEB %d (emulated)",
+ pnum);
+ return -EIO;
+ }
+
+ if (ubi_dbg_is_ff(ubi, MASK_IO_FF_VID)) {
+ ubi_warn(ubi, "bit-all-ff (emulated)");
+ return UBI_IO_FF;
+ }
+
+ if (ubi_dbg_is_ff_bitflips(ubi, MASK_IO_FF_BITFLIPS_VID)) {
+ ubi_warn(ubi, "bit-all-ff with error reported by MTD driver (emulated)");
+ return UBI_IO_FF_BITFLIPS;
+ }
+
+ if (ubi_dbg_is_bad_hdr(ubi, MASK_BAD_HDR_VID)) {
+ ubi_warn(ubi, "bad_hdr (emulated)");
+ return UBI_IO_BAD_HDR;
+ }
+
+ if (ubi_dbg_is_bad_hdr_ebadmsg(ubi, MASK_BAD_HDR_EBADMSG_VID)) {
+ ubi_warn(ubi, "bad_hdr with ECC error (emulated)");
+ return UBI_IO_BAD_HDR_EBADMSG;
+ }
+
+ return 0;
}
/**
@@ -1071,8 +1144,11 @@ 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))
+ if (ubi_dbg_is_power_cut(ubi, MASK_POWER_CUT_VID)) {
+ ubi_warn(ubi, "emulating a power cut when writing VID header");
+ ubi_ro_mode(ubi);
return -EROFS;
+ }
err = ubi_io_write(ubi, p, pnum, ubi->vid_hdr_aloffset,
ubi->vid_hdr_alsize);