[flashrom-gerrit] Change in flashrom[master]: linux_mtd: check ioctl() return value properly

[Nikolai Artemiev (Code Review)]

Nikolai Artemiev has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/60996 )

Change subject: linux_mtd: check ioctl() return value properly
......................................................................

linux_mtd: check ioctl() return value properly

Make the linux_mtd driver treat any negative return value from the
MEMERASE ioctl as an error. Previously it only treated -1 as an error.

BUG=none
BRANCH=none
TEST=builds

Change-Id: I40cfbdee2ab608fbe6c17d9cac6ec53ff224d9a4
Signed-off-by: Nikolai Artemiev 
---
M linux_mtd.c
1 file changed, 5 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/96/60996/1

diff --git a/linux_mtd.c b/linux_mtd.c
index 04eccde..9d80a51 100644
--- a/linux_mtd.c
+++ b/linux_mtd.c
@@ -286,9 +286,11 @@
    		.length = data->erasesize,
    	};

-		if (ioctl(fileno(data->dev_fp), MEMERASE, &erase_info) == -1) {
-			msg_perr("%s: ioctl: %s\n", __func__, strerror(errno));
-			return 1;
+		int ret = ioctl(fileno(data->dev_fp), MEMERASE, &erase_info);
+		if (ret < 0) {
+		        msg_perr("%s: MEMERASE ioctl call returned %d, error: %s\n",
+		                 __func__, ret, strerror(errno));
+		        return 1;
    	}
    }