From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Fainelli Subject: [PATCH] net: dsa: bcm_sf2: Unwind errors in correct order Date: Fri, 29 Jul 2016 12:35:57 -0700 Message-ID: <1469820957-21496-1-git-send-email-f.fainelli@gmail.com> Cc: davem@davemloft.net, andrew@lunn.ch, vivien.didelot@savoirfairelinux.com, Florian Fainelli To: netdev@vger.kernel.org Return-path: Received: from mail-pf0-f194.google.com ([209.85.192.194]:35980 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750839AbcG2TgB (ORCPT ); Fri, 29 Jul 2016 15:36:01 -0400 Received: by mail-pf0-f194.google.com with SMTP id y134so5903585pfg.3 for ; Fri, 29 Jul 2016 12:36:01 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: In case we cannot complete bcm_sf2_sw_setup() for any reason, and we go to the out_unmap label, but the MDIO bus has not been registered yet, we will hit the BUG condition in drivers/net/phy/mdio_bus.c about the bus not being registered. Fix this by dedicating a specific lable for when we fail after the MDIO bus has been successfully registered. Fixes: 461cd1b03e32 ("net: dsa: bcm_sf2: Register our slave MDIO bus") Signed-off-by: Florian Fainelli --- drivers/net/dsa/bcm_sf2.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index cd1d630ae3a9..b2b838724a9b 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -1622,7 +1622,7 @@ static int bcm_sf2_sw_setup(struct dsa_switch *ds) "switch_0", priv); if (ret < 0) { pr_err("failed to request switch_0 IRQ\n"); - goto out_unmap; + goto out_mdio; } ret = request_irq(priv->irq1, bcm_sf2_switch_1_isr, 0, @@ -1679,6 +1679,8 @@ static int bcm_sf2_sw_setup(struct dsa_switch *ds) out_free_irq0: free_irq(priv->irq0, priv); +out_mdio: + bcm_sf2_mdio_unregister(priv); out_unmap: base = &priv->core; for (i = 0; i < BCM_SF2_REGS_NUM; i++) { @@ -1686,7 +1688,6 @@ out_unmap: iounmap(*base); base++; } - bcm_sf2_mdio_unregister(priv); return ret; } -- 2.7.4