drivers/net/can/usb/etas_es58x/es58x_fd.c:174:8: warning: Uninitialized variable: rx_event_msg [uninitvar]
From: kernel test robot
Date: Wed Mar 02 2022 - 04:47:29 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 575115360652e9920cc56a028a286ebe9bf82694
commit: c664e2137a27680922d8aeb64fb10313416b254f can: etas_es58x: add support for the ETAS ES58X_FD CAN USB interfaces
date: 11 months ago
compiler: powerpc64-linux-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <yujie.liu@xxxxxxxxx>
cppcheck possible warnings: (new ones prefixed by >>, may not be real problems)
In file included from drivers/net/can/usb/etas_es58x/es58x_fd.c:
>> drivers/net/can/usb/etas_es58x/es58x_fd.c:174:8: warning: Uninitialized variable: rx_event_msg [uninitvar]
ret = es58x_check_msg_len(es58x_dev->dev, *rx_event_msg, msg_len);
^
vim +174 drivers/net/can/usb/etas_es58x/es58x_fd.c
c664e2137a2768 Vincent Mailhol 2021-04-10 165
c664e2137a2768 Vincent Mailhol 2021-04-10 166 static int es58x_fd_rx_event_msg(struct net_device *netdev,
c664e2137a2768 Vincent Mailhol 2021-04-10 167 const struct es58x_fd_urb_cmd *es58x_fd_urb_cmd)
c664e2137a2768 Vincent Mailhol 2021-04-10 168 {
c664e2137a2768 Vincent Mailhol 2021-04-10 169 struct es58x_device *es58x_dev = es58x_priv(netdev)->es58x_dev;
c664e2137a2768 Vincent Mailhol 2021-04-10 170 u16 msg_len = get_unaligned_le16(&es58x_fd_urb_cmd->msg_len);
c664e2137a2768 Vincent Mailhol 2021-04-10 @171 const struct es58x_fd_rx_event_msg *rx_event_msg;
c664e2137a2768 Vincent Mailhol 2021-04-10 172 int ret;
c664e2137a2768 Vincent Mailhol 2021-04-10 173
c664e2137a2768 Vincent Mailhol 2021-04-10 @174 ret = es58x_check_msg_len(es58x_dev->dev, *rx_event_msg, msg_len);
c664e2137a2768 Vincent Mailhol 2021-04-10 175 if (ret)
c664e2137a2768 Vincent Mailhol 2021-04-10 176 return ret;
c664e2137a2768 Vincent Mailhol 2021-04-10 177
c664e2137a2768 Vincent Mailhol 2021-04-10 178 rx_event_msg = &es58x_fd_urb_cmd->rx_event_msg;
c664e2137a2768 Vincent Mailhol 2021-04-10 179
c664e2137a2768 Vincent Mailhol 2021-04-10 180 return es58x_rx_err_msg(netdev, rx_event_msg->error_code,
c664e2137a2768 Vincent Mailhol 2021-04-10 181 rx_event_msg->event_code,
c664e2137a2768 Vincent Mailhol 2021-04-10 182 get_unaligned_le64(&rx_event_msg->timestamp));
c664e2137a2768 Vincent Mailhol 2021-04-10 183 }
c664e2137a2768 Vincent Mailhol 2021-04-10 184
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