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Subject[PATCH 4.19 270/293] qed: Handle management FW error
Date
From: Shai Malin <smalin@marvell.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@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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;

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