From 2a2d9a8200f987b42966ab4e96b7769b8f9a159f Mon Sep 17 00:00:00 2001 From: Gris Ge Date: Wed, 22 Feb 2017 16:18:20 +0800 Subject: [PATCH] udev: Fix gcc warning on non-x86 platform. Issue: Got failure on s390x: scan-scsi-target.c:90:2: error: comparison is always true due to limited range of data type [-Werror=type-limits] Root cause: The error is on these lines: char c; ... while ((c = getopt_long(argc, argv, "rh", longopts, NULL)) != -1) { On non-x86 platform, char is unsigned. Which makes the (c != -1) always true. Fix: Take return of getopt_long() as int. Signed-off-by: Gris Ge --- tools/udev/scan-scsi-target.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: tools/udev/scan-scsi-target.c =================================================================== --- tools/udev/scan-scsi-target.c.orig +++ tools/udev/scan-scsi-target.c @@ -54,7 +54,7 @@ static void __attribute__ ((__noreturn__ int main(int argc, char **argv) { - char c; + int c; char *devpath; char *sysfs_path;