[S] Change in flashrom[master]: cli_classic.c: Add error messages for invalid --wp-region use

[Felix Singer (Code Review)]

Felix Singer has submitted this change. ( https://review.coreboot.org/c/flashrom/+/67725 )

(

6 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: cli_classic.c: Add error messages for invalid --wp-region use
......................................................................

cli_classic.c: Add error messages for invalid --wp-region use

Print errors if --wp-region is used without a layout file or the layout
file doesn't contain the region.

BUG=b:247055486
TEST=builds

Change-Id: Ie606ba7f8a423405099679ca62169c395d994b5d
Signed-off-by: Nikolai Artemiev 
Reviewed-on: https://review.coreboot.org/c/flashrom/+/67725
Tested-by: build bot (Jenkins) 
Reviewed-by: Felix Singer 
---
M cli_classic.c
1 file changed, 29 insertions(+), 2 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Singer: Looks good to me, approved

diff --git a/cli_classic.c b/cli_classic.c
index bac31d1..3de0020 100644
--- a/cli_classic.c
+++ b/cli_classic.c
@@ -1110,9 +1110,17 @@

if (any_wp_op) {
    	if (set_wp_region && wp_region) {
-			ret = flashrom_layout_get_region_range(layout, wp_region, &wp_start, &wp_len);
-			if (ret)
+			if (!layout) {
+				msg_gerr("Error: A flash layout must be specified to use --wp-region.\n");
+				ret = 1;
    			goto out_release;
+			}
+
+			ret = flashrom_layout_get_region_range(layout, wp_region, &wp_start, &wp_len);
+			if (ret) {
+				msg_gerr("Error: Region %s not found in flash layout.\n", wp_region);
+				goto out_release;
+			}
    		set_wp_range = true;
    	}
    	ret = wp_cli(