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dpaa2-mac: bail if the dpmacs fwnode is not found 

The parent pointer node handler must be declared with a NULL
initializer. Before using it, a check must be performed to make
sure that a valid address has been assigned to it.

Signed-off-by: Robert-Ionut Alexa <robert-ionut.alexa@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Robert-Ionut Alexa 2022-01-06 15:59:03 +02:00 committed by Jakub Kicinski
parent 257367c0c9
commit 5b1e38c079
1 changed files with 4 additions and 1 deletions
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5
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
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@ -41,7 +41,7 @@ static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
u16 dpmac_id)
{
struct fwnode_handle *fwnode, *parent, *child = NULL;
struct fwnode_handle *fwnode, *parent = NULL, *child = NULL;
struct device_node *dpmacs = NULL;
int err;
u32 id;
@ -56,6 +56,9 @@ static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
parent = fwnode;
}
if (!parent)
return NULL;
fwnode_for_each_child_node(parent, child) {
err = -EINVAL;
if (is_acpi_device_node(child))