netdev - [PATCH net-next v3 5/5] ptp: ocp: remove flash image header check fallback

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Message-Id: <20221018090122.3361-6-vfedorenko@novek.ru>
Date:   Tue, 18 Oct 2022 12:01:22 +0300
From:   Vadim Fedorenko <vfedorenko@...ek.ru>
To:     Richard Cochran <richardcochran@...il.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Vadim Fedorenko <vadfed@...com>
Subject: [PATCH net-next v3 5/5] ptp: ocp: remove flash image header check fallback

From: Vadim Fedorenko <vadfed@...com>

Previously there was a fallback mode to flash firmware image without
proper header. But now we have different supported vendors and flashing
wrong image could destroy the hardware. Remove fallback mode and force
header check. Both vendors have published firmware images with headers.

Signed-off-by: Vadim Fedorenko <vadfed@...com>
---
 drivers/ptp/ptp_ocp.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 18baababb3e2..5079bb01b40b 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -1531,11 +1531,9 @@ ptp_ocp_devlink_fw_image(struct devlink *devlink, const struct firmware *fw,
 	hdr = (const struct ptp_ocp_firmware_header *)fw->data;
 	if (memcmp(hdr->magic, OCP_FIRMWARE_MAGIC_HEADER, 4)) {
 		devlink_flash_update_status_notify(devlink,
-			"No firmware header found, flashing raw image",
+			"No firmware header found, cancel firmware upgrade",
 			NULL, 0, 0);
-		offset = 0;
-		length = fw->size;
-		goto out;
+		return -EINVAL;
 	}
 
 	if (be16_to_cpu(hdr->pci_vendor_id) != bp->pdev->vendor ||
@@ -1563,7 +1561,6 @@ ptp_ocp_devlink_fw_image(struct devlink *devlink, const struct firmware *fw,
 		return -EINVAL;
 	}
 
-out:
 	*data = &fw->data[offset];
 	*size = length;
 
-- 
2.27.0