diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/746-stable-net-dsa-mt7530-fix-null-pointer-dereferencing-in-por.patch')
-rw-r--r-- | target/linux/generic/backport-5.4/746-stable-net-dsa-mt7530-fix-null-pointer-dereferencing-in-por.patch | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/target/linux/generic/backport-5.4/746-stable-net-dsa-mt7530-fix-null-pointer-dereferencing-in-por.patch b/target/linux/generic/backport-5.4/746-stable-net-dsa-mt7530-fix-null-pointer-dereferencing-in-por.patch deleted file mode 100644 index 1775bfb32c..0000000000 --- a/target/linux/generic/backport-5.4/746-stable-net-dsa-mt7530-fix-null-pointer-dereferencing-in-por.patch +++ /dev/null @@ -1,39 +0,0 @@ -From 0452800f6db4ed0a42ffb15867c0acfd68829f6a Mon Sep 17 00:00:00 2001 -From: Chuanhong Guo <gch981213@gmail.com> -Date: Fri, 3 Apr 2020 19:28:24 +0800 -Subject: net: dsa: mt7530: fix null pointer dereferencing in port5 setup -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -The 2nd gmac of mediatek soc ethernet may not be connected to a PHY -and a phy-handle isn't always available. -Unfortunately, mt7530 dsa driver assumes that the 2nd gmac is always -connected to switch port 5 and setup mt7530 according to phy address -of 2nd gmac node, causing null pointer dereferencing when phy-handle -isn't defined in dts. -This commit fix this setup code by checking return value of -of_parse_phandle before using it. - -Fixes: 38f790a80560 ("net: dsa: mt7530: Add support for port 5") -Signed-off-by: Chuanhong Guo <gch981213@gmail.com> -Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com> -Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> -Tested-by: René van Dorst <opensource@vdorst.com> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/dsa/mt7530.c | 3 +++ - 1 file changed, 3 insertions(+) - ---- a/drivers/net/dsa/mt7530.c -+++ b/drivers/net/dsa/mt7530.c -@@ -1411,6 +1411,9 @@ mt7530_setup(struct dsa_switch *ds) - continue; - - phy_node = of_parse_phandle(mac_np, "phy-handle", 0); -+ if (!phy_node) -+ continue; -+ - if (phy_node->parent == priv->dev->of_node->parent) { - interface = of_get_phy_mode(mac_np); - id = of_mdio_parse_addr(ds->dev, phy_node); |