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

[Edward O'Callaghan (Code Review)]

Edward O'Callaghan has submitted this change. ( https://review.coreboot.org/c/flashrom/+/60996 )

Change subject: linux_mtd: check ioctl() return value properly
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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=b:213561594,b:210973586,b:182223106
BRANCH=none
TEST=builds

Change-Id: I40cfbdee2ab608fbe6c17d9cac6ec53ff224d9a4
Signed-off-by: Nikolai Artemiev 
Reviewed-on: https://review.coreboot.org/c/flashrom/+/60996
Tested-by: build bot (Jenkins) 
Reviewed-by: Angel Pons 
Reviewed-by: Edward O'Callaghan 
---
M linux_mtd.c
1 file changed, 5 insertions(+), 3 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Angel Pons: Looks good to me, approved
  Edward O'Callaghan: Looks good to me, approved

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;
    	}
    }

1 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.