linux-kernel - [PATCH 4.19 28/35] net: ethernet: microchip: lan743x: Fix driver crash when lan743x_pm

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Date:   Mon,  1 Nov 2021 10:17:40 +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, Yuiko Oshino <yuiko.oshino@...rochip.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 28/35] net: ethernet: microchip: lan743x: Fix driver crash when lan743x_pm_resume fails

From: Yuiko Oshino <yuiko.oshino@...rochip.com>

commit d6423d2ec39cce2bfca418c81ef51792891576bc upstream.

The driver needs to clean up and return when the initialization fails on resume.

Fixes: 23f0703c125b ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Yuiko Oshino <yuiko.oshino@...rochip.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/microchip/lan743x_main.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -3003,6 +3003,8 @@ static int lan743x_pm_resume(struct devi
 	if (ret) {
 		netif_err(adapter, probe, adapter->netdev,
 			  "lan743x_hardware_init returned %d\n", ret);
+		lan743x_pci_cleanup(adapter);
+		return ret;
 	}
 
 	/* open netdev when netdev is at running state while resume.