mirror of https://gitee.com/openkylin/linux.git
usb: typec: tcpm: usb: typec: tcpm: Fix a signedness bug in tcpm_fw_get_caps()
The "port->typec_caps.data" and "port->typec_caps.type" variables are
enums and in this context GCC will treat them as an unsigned int so they
can never be less than zero.
Fixes: ae8a2ca8a2
("usb: typec: Group all TCPCI/TCPM code together")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191001120117.GA23528@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
2636d49b64
commit
7101949f36
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@ -4409,18 +4409,20 @@ static int tcpm_fw_get_caps(struct tcpm_port *port,
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/* USB data support is optional */
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ret = fwnode_property_read_string(fwnode, "data-role", &cap_str);
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if (ret == 0) {
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port->typec_caps.data = typec_find_port_data_role(cap_str);
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if (port->typec_caps.data < 0)
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return -EINVAL;
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ret = typec_find_port_data_role(cap_str);
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if (ret < 0)
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return ret;
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port->typec_caps.data = ret;
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}
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ret = fwnode_property_read_string(fwnode, "power-role", &cap_str);
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if (ret < 0)
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return ret;
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port->typec_caps.type = typec_find_port_power_role(cap_str);
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if (port->typec_caps.type < 0)
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return -EINVAL;
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ret = typec_find_port_power_role(cap_str);
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if (ret < 0)
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return ret;
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port->typec_caps.type = ret;
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port->port_type = port->typec_caps.type;
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if (port->port_type == TYPEC_PORT_SNK)
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