A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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net: dsa: slave: chip data is optional, don't dereference NULL

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The new binding does not make use of dsa_chip_data, a.k.a cd.  When
retrieving the size of the EEPROM attached to a switch, don't assume
there is a cd attached to the switch structure.

Signed-off-by: Andrew Lunn <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Reviewed-by: Vivien Didelot <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Andrew Lunn 2016-06-04 21:16:52 +02:00 • committed by David S. Miller
commit 0e57604408
1 changed files with 1 additions and 1 deletions
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net/dsa/slave.c
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@ -615,7 +615,7 @@ static int dsa_slave_get_eeprom_len(struct net_device *dev)
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
if (ds->cd->eeprom_len)
if (ds->cd && ds->cd->eeprom_len)
return ds->cd->eeprom_len;
if (ds->drv->get_eeprom_len)