linux-kernel - [PATCH 4.19 270/293] qed: Handle management FW error

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Message-Id: <20210920163942.652587172@linuxfoundation.org>
Date:   Mon, 20 Sep 2021 18:43:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ariel Elior <aelior@...vell.com>,
        Shai Malin <smalin@...vell.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 270/293] qed: Handle management FW error

From: Shai Malin <smalin@...vell.com>

commit 20e100f52730cd0db609e559799c1712b5f27582 upstream.

Handle MFW (management FW) error response in order to avoid a crash
during recovery flows.

Changes from v1:
- Add "Fixes tag".

Fixes: tag 5e7ba042fd05 ("qed: Fix reading stale configuration information")
Signed-off-by: Ariel Elior <aelior@...vell.com>
Signed-off-by: Shai Malin <smalin@...vell.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/qlogic/qed/qed_mcp.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
@@ -2841,6 +2841,7 @@ qed_mcp_get_nvm_image_att(struct qed_hwf
 			  struct qed_nvm_image_att *p_image_att)
 {
 	enum nvm_image_type type;
+	int rc;
 	u32 i;
 
 	/* Translate image_id into MFW definitions */
@@ -2866,7 +2867,10 @@ qed_mcp_get_nvm_image_att(struct qed_hwf
 		return -EINVAL;
 	}
 
-	qed_mcp_nvm_info_populate(p_hwfn);
+	rc = qed_mcp_nvm_info_populate(p_hwfn);
+	if (rc)
+		return rc;
+
 	for (i = 0; i < p_hwfn->nvm_info.num_images; i++)
 		if (type == p_hwfn->nvm_info.image_att[i].image_type)
 			break;