[PATCH 3.18 029/145] UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header

[Greg Kroah-Hartman]

3.18-stable review patch.  If anyone has any objections, please let me know.

--

From: Boris Brezillon 

commit ecbfa8eabae9cd73522d1d3d15869703c263d859 upstream.

scan_pool() does not mark the PEB for scrubing when bitflips are
detected in the EC header of a free PEB (VID header region left to
0xff).
Make sure we scrub the PEB in this case.

Signed-off-by: Boris Brezillon 
Fixes: dbb7d2a88d2a ("UBI: Add fastmap core")
Signed-off-by: Richard Weinberger 
Signed-off-by: Greg Kroah-Hartman 

---
 drivers/mtd/ubi/fastmap.c |7 ---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -446,10 +446,11 @@ static int scan_pool(struct ubi_device *
unsigned long long ec = be64_to_cpu(ech->ec);
unmap_peb(ai, pnum);
dbg_bld("Adding PEB to free: %i", pnum);
+
if (err == UBI_IO_FF_BITFLIPS)
-   add_aeb(ai, free, pnum, ec, 1);
-   else
-   add_aeb(ai, free, pnum, ec, 0);
+   scrub = 1;
+
+   add_aeb(ai, free, pnum, ec, scrub);
continue;
} else if (err == 0 || err == UBI_IO_BITFLIPS) {
dbg_bld("Found non empty PEB:%i in pool", pnum);

[PATCH 3.18 029/145] UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header

[Greg Kroah-Hartman]

3.18-stable review patch.  If anyone has any objections, please let me know.

--

From: Boris Brezillon 

commit ecbfa8eabae9cd73522d1d3d15869703c263d859 upstream.

scan_pool() does not mark the PEB for scrubing when bitflips are
detected in the EC header of a free PEB (VID header region left to
0xff).
Make sure we scrub the PEB in this case.

Signed-off-by: Boris Brezillon 
Fixes: dbb7d2a88d2a ("UBI: Add fastmap core")
Signed-off-by: Richard Weinberger 
Signed-off-by: Greg Kroah-Hartman 

---
 drivers/mtd/ubi/fastmap.c |7 ---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -446,10 +446,11 @@ static int scan_pool(struct ubi_device *
unsigned long long ec = be64_to_cpu(ech->ec);
unmap_peb(ai, pnum);
dbg_bld("Adding PEB to free: %i", pnum);
+
if (err == UBI_IO_FF_BITFLIPS)
-   add_aeb(ai, free, pnum, ec, 1);
-   else
-   add_aeb(ai, free, pnum, ec, 0);
+   scrub = 1;
+
+   add_aeb(ai, free, pnum, ec, scrub);
continue;
} else if (err == 0 || err == UBI_IO_BITFLIPS) {
dbg_bld("Found non empty PEB:%i in pool", pnum);