diff options
| -rw-r--r-- | drivers/pci/of.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 9f8eb5df279e..c216701c75dd 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -875,24 +875,19 @@ EXPORT_SYMBOL_GPL(of_pci_supply_present); * of_pci_get_max_link_speed - Find the maximum link speed of the given device node. * @node: Device tree node with the maximum link speed information. * - * This function will try to find the limitation of link speed by finding - * a property called "max-link-speed" of the given device node. + * This function will try to read the "max-link-speed" property of the given + * device tree node. It does NOT validate the value of the property. * - * Return: - * * > 0 - On success, a maximum link speed. - * * -EINVAL - Invalid "max-link-speed" property value, or failure to access - * the property of the device tree node. - * - * Returns the associated max link speed from DT, or a negative value if the - * required property is not found or is invalid. + * Return: Maximum link speed value on success, errno on failure. */ int of_pci_get_max_link_speed(struct device_node *node) { u32 max_link_speed; + int ret; - if (of_property_read_u32(node, "max-link-speed", &max_link_speed) || - max_link_speed == 0 || max_link_speed > 4) - return -EINVAL; + ret = of_property_read_u32(node, "max-link-speed", &max_link_speed); + if (ret) + return ret; return max_link_speed; } |