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| author | Florian Fainelli <f.fainelli@gmail.com> | 2016-07-29 12:35:57 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-30 23:14:52 -0700 |
| commit | bb9c0fa3aa2932eb3825557e452cac248e709bef (patch) | |
| tree | 7c3f187452ad65bd4244b56dcc3755e27cf72233 /drivers/net | |
| parent | 33c77efbbef92cffd0d1f351fad816eeefbbdeb9 (diff) | |
| download | linux-bb9c0fa3aa2932eb3825557e452cac248e709bef.tar.gz linux-bb9c0fa3aa2932eb3825557e452cac248e709bef.tar.bz2 linux-bb9c0fa3aa2932eb3825557e452cac248e709bef.zip | |
net: dsa: bcm_sf2: Unwind errors in correct order
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 <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/dsa/bcm_sf2.c | 5 |
1 files 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; } |