UBI: dump stack when switching to R/O mode

If we have debugging enabled and switching to R/O mode because of an error -
dump the stack to improve UBI error reporting and make the further diagnostics
easier to do.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index fd19f8d..dc64c76 100644 (file)
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -667,6 +667,7 @@ static inline void ubi_ro_mode(struct ubi_device *ubi)
        if (!ubi->ro_mode) {
                ubi->ro_mode = 1;
                ubi_warn("switch to read-only mode");
+               ubi_dbg_dump_stack();
        }
 }