[PATCH 1/3] skip updating /etc/default/grub for s390x

[Coiby Xu]

Resolves: bz2104534

When running "kdumpctl reset-crashkernel --kernel=ALL" on s390x,
sed: can't read /etc/default/grub: No such file or directory
sed: can't read /etc/default/grub: No such file or directory

This happens because s390x doesn't use the grub bootloader and
/etc/default/grub doesn't exist.

Reported-by: [e-mail]
Signed-off-by: Coiby Xu 
---
 kdumpctl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kdumpctl b/kdumpctl
index 2157371..10e3429 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -1405,6 +1405,10 @@ _update_kernel_arg_in_grub_etc_default()
 {
    local _para=$1 _val=$2 _para_val

+	if [[ $(uname -m) = s390x ]]; then
+		return
+	fi
+
    if [[ -n $_val ]]; then
    	_para_val="$_para=$_val"
    fi