Messages in this thread Patch in this message | | | From | Jiri Slaby <> | Subject | [PATCH 3.12 097/181] net: cpsw: fix null dereference at probe | Date | Mon, 30 Jun 2014 13:51:58 +0200 |
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From: Johan Hovold <jhovold@gmail.com>
3.12-stable review patch. If anyone has any objections, please let me know.
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commit 6954cc1f238199e971ec905c5cc87120806ac981 upstream.
Fix null-pointer dereference at probe when the mdio platform device is missing (e.g. when it has been disabled in DT).
Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- drivers/net/ethernet/ti/cpsw.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index cc3ce557e4aa..498e808391a9 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1797,6 +1797,10 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, mdio_node = of_find_node_by_phandle(be32_to_cpup(parp)); phyid = be32_to_cpup(parp+1); mdio = of_find_device_by_node(mdio_node); + if (!mdio) { + pr_err("Missing mdio platform device\n"); + return -EINVAL; + } snprintf(slave_data->phy_id, sizeof(slave_data->phy_id), PHY_ID_FMT, mdio->name, phyid); -- 2.0.0
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