X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmtd%2Fubi%2Fio.c;h=4ac11df7b048d3a24684744c4f399f13b81653ea;hb=f1b0c8d3d3b5ff9c0b14bb2383a4bc38d8922bd1;hp=7c304eec78b59ba8142a411a96ab4d925760052f;hpb=f563d53c30f3e60cde3a194cc1a87284ee0b3366;p=linux-2.6

diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 7c304eec78..4ac11df7b0 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -173,6 +173,16 @@ retry:
 		ubi_err("error %d while reading %d bytes from PEB %d:%d, "
 			"read %zd bytes", err, len, pnum, offset, read);
 		ubi_dbg_dump_stack();
+
+		/*
+		 * The driver should never return -EBADMSG if it failed to read
+		 * all the requested data. But some buggy drivers might do
+		 * this, so we change it to -EIO.
+		 */
+		if (read != len && err == -EBADMSG) {
+			ubi_assert(0);
+			err = -EIO;
+		}
 	} else {
 		ubi_assert(len == read);
 
@@ -621,6 +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) {
@@ -894,6 +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,