redonkable/alistair23-linux
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net: dsa: bcm_sf2: Do not clobber b53_switch_ops

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We make the bcm_sf2 driver override ds->ops which points to
b53_switch_ops since b53_switch_alloc() did the assignent. This is all
well and good until a second b53 switch comes in, and ends up using the
bcm_sf2 operations. Make a proper local copy, substitute the ds->ops
pointer and then override the operations.

Fixes: f458995b9a ("net: dsa: bcm_sf2: Utilize core B53 driver when possible")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-01-07 21:01:56 -08:00 committed by David S. Miller
parent a2cd64f301
commit a4c61b92b3
1 changed files with 7 additions and 0 deletions
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7
drivers/net/dsa/bcm_sf2.c
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@ -982,6 +982,7 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
struct device_node *dn = pdev->dev.of_node;
struct b53_platform_data *pdata;
struct dsa_switch_ops *ops;
struct bcm_sf2_priv *priv;
struct b53_device *dev;
struct dsa_switch *ds;
@ -995,6 +996,10 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
if (!ops)
return -ENOMEM;
dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
if (!dev)
return -ENOMEM;
@ -1014,6 +1019,8 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
ds = dev->ds;
/* Override the parts that are non-standard wrt. normal b53 devices */
memcpy(ops, ds->ops, sizeof(*ops));
ds->ops = ops;
ds->ops->get_tag_protocol = bcm_sf2_sw_get_tag_protocol;
ds->ops->setup = bcm_sf2_sw_setup;
ds->ops->get_phy_flags = bcm_sf2_sw_get_phy_flags;