[PATCH 05/15] vbe: Tidy up error checking with blk_read()

[Simon Glass]

This function can read fewer blocks than requested, so update the checks
to handle this.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 boot/vbe_common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/boot/vbe_common.c b/boot/vbe_common.c
index dfe44822430..c7f09c6d090 100644
--- a/boot/vbe_common.c
+++ b/boot/vbe_common.c
@@ -39,6 +39,8 @@ int vbe_read_fit(struct udevice *blk, ulong area_offset, ulong area_size,
 	ret = blk_read(blk, blknum, 1, sbuf);
 	if (ret < 0)
 		return log_msg_ret("rd", ret);
+	else if (ret != 1)
+		return log_msg_ret("rd2", -EIO);
 
 	ret = fdt_check_header(sbuf);
 	if (ret < 0)
@@ -127,6 +129,8 @@ int vbe_read_fit(struct udevice *blk, ulong area_offset, ulong area_size,
 			  blknum, full_size, num_blks, base, base_buf, ret);
 		if (ret < 0)
 			return log_msg_ret("rd", ret);
+		if (ret != num_blks)
+			return log_msg_ret("rd", -EIO);
 	}
 	if (load_addrp)
 		*load_addrp = load_addr;
-- 
2.34.1