linux-kernel - [PATCH 5.4 159/191] bnxt_en: Free context memory in the open path if firmware has been reset.

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Date:   Thu,  2 Jan 2020 23:07:21 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Michael Chan <michael.chan@...adcom.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.4 159/191] bnxt_en: Free context memory in the open path if firmware has been reset.

From: Michael Chan <michael.chan@...adcom.com>

[ Upstream commit 325f85f37e5b35807d86185bdf2c64d2980c44ba ]

This will trigger new context memory to be rediscovered and allocated
during the re-probe process after a firmware reset.  Without this, the
newly reset firmware does not have valid context memory and the driver
will eventually fail to allocate some resources.

Fixes: ec5d31e3c15d ("bnxt_en: Handle firmware reset status during IF_UP.")
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -8766,6 +8766,9 @@ static int bnxt_hwrm_if_change(struct bn
 	}
 	if (resc_reinit || fw_reset) {
 		if (fw_reset) {
+			bnxt_free_ctx_mem(bp);
+			kfree(bp->ctx);
+			bp->ctx = NULL;
 			rc = bnxt_fw_init_one(bp);
 			if (rc) {
 				set_bit(BNXT_STATE_ABORT_ERR, &bp->state);