From: Tom Rini <trini@konsulko.com>
Date: Tue, 15 Aug 2017 00:58:50 +0000 (-0400)
Subject: cmd/read.c: Fix checking blk_dread return value
X-Git-Tag: v2017.09-rc3~63
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=d03618d5cbc3e1fb4f8c63f2e4966f825007ce08;p=oweals%2Fu-boot.git

cmd/read.c: Fix checking blk_dread return value

The function blk_dread will return -ENOSYS on failure or on success the
number of blocks read, which must be the number asked to read (otherwise
it failed somewhere).  Correct this check.

Reported-by: Coverity (CID: 166335)
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
---

diff --git a/cmd/read.c b/cmd/read.c
index ecf925426f..82c2d9ad99 100644
--- a/cmd/read.c
+++ b/cmd/read.c
@@ -66,7 +66,7 @@ int do_read(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		return 1;
 	}
 
-	if (blk_dread(dev_desc, offset + blk, cnt, addr) < 0) {
+	if (blk_dread(dev_desc, offset + blk, cnt, addr) != cnt) {
 		printf("Error reading blocks\n");
 		return 1;
 	}