ar71xx: fix kernel Oops in at803x_link_change_notify

r45954 ("ar71xx: fix 100/10mbps ethernet link issues on mynet range
extender") introduced a pdata based modification of the tx_clk_dly. But it
was not checked if pdata actually existed. This caused a page fault on all
devices which didn't have at803x_platform_data specified for an at803x
based device.

Signed-off-by: Sven Eckelmann <sven@open-mesh.com>
Backport of r46200

SVN-Revision: 46252

diff --git a/target/linux/ar71xx/patches-3.18/425-net-phy-at803x-allow-to-configure-via-pdata.patch b/target/linux/ar71xx/patches-3.18/425-net-phy-at803x-allow-to-configure-via-pdata.patch
index 34b9bc06db5eb04c10da5b987f0d49ac24659d34..0d021ac7bd8a9b81eb6fcb609d78f1f9ab2ad2b9 100644 (file)
--- a/target/linux/ar71xx/patches-3.18/425-net-phy-at803x-allow-to-configure-via-pdata.patch
+++ b/target/linux/ar71xx/patches-3.18/425-net-phy-at803x-allow-to-configure-via-pdata.patch
@@ -141,7 +141,7 @@
                        priv->phy_reset = false;
                }
        }
-+      if (pdata->fixup_rgmii_tx_delay &&
++      if (pdata && pdata->fixup_rgmii_tx_delay &&
 +          phydev->speed != priv->prev_speed) {
 +              switch (phydev->speed) {
 +              case SPEED_10: