UBI: be verbose when debuggin is enabled

Make I/O function to be always verbose when about CRC errors
and magic number errors when I/O debugging is enabled.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

drivers/mtd/ubi/debug.h

@@ -99,8 +99,10 @@ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req);
 #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD
 /* Initialization and build messages */
 #define dbg_bld(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
+#define UBI_IO_DEBUG 1
 #else
 #define dbg_bld(fmt, ...) ({})
+#define UBI_IO_DEBUG 0
 #endif
 
 #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS

drivers/mtd/ubi/io.c

@@ -631,6 +631,8 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum,
 
 	dbg_io("read EC header from PEB %d", pnum);
 	ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+	if (UBI_IO_DEBUG)
+		verbose = 1;
 
 	err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE);
 	if (err) {
@@ -904,6 +906,8 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum,
 
 	dbg_io("read VID header from PEB %d", pnum);
 	ubi_assert(pnum >= 0 &&  pnum < ubi->peb_count);
+	if (UBI_IO_DEBUG)
+		verbose = 1;
 
 	p = (char *)vid_hdr - ubi->vid_hdr_shift;
 	err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset,