[S] Change in flashrom[master]: writeprotect: Add some debug logging if wp_verify fails

[Evan Benn (Code Review)]

Attention is currently required from: Nikolai Artemiev.

Hello Nikolai Artemiev,

I'd like you to do a code review.
Please visit

https://review.coreboot.org/c/flashrom/+/67720

to review the following change.

Change subject: writeprotect: Add some debug logging if wp_verify fails
......................................................................

writeprotect: Add some debug logging if wp_verify fails

Change-Id: I5fcaf767570418f90ae44826a1135d9b49653033
Signed-off-by: Evan Benn 
---
M writeprotect.c
1 file changed, 18 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/20/67720/1

diff --git a/writeprotect.c b/writeprotect.c
index 57d0f9b..c32bee1 100644
--- a/writeprotect.c
+++ b/writeprotect.c
@@ -155,6 +155,7 @@
    		return FLASHROM_WP_ERR_WRITE_FAILED;
    }

+	enum flashrom_wp_result ret = FLASHROM_WP_OK;
    /* Verify each register */
    for (enum flash_reg reg = STATUS1; reg < MAX_REGISTERS; reg++) {
    	if (!write_masks[reg])
@@ -164,14 +165,18 @@
    	if (wp_read_register(flash, reg, &value))
    		return FLASHROM_WP_ERR_READ_FAILED;

+		msg_cdbg2("wp_verify reg:%u value:0x%x\n", reg, value);
    	uint8_t actual = value & write_masks[reg];
    	uint8_t expected = reg_values[reg] & write_masks[reg];

-		if (actual != expected)
-			return FLASHROM_WP_ERR_VERIFY_FAILED;
+		if (actual != expected) {
+			msg_cdbg("wp_verify failed: reg:%u actual:0x%x expected:0x%x\n", reg,
+				 actual, expected);
+			ret = FLASHROM_WP_ERR_VERIFY_FAILED;
+		}
    }

-	return FLASHROM_WP_OK;
+	return ret;
 }

/** Get the range selected by a WP configuration. */