can: kvaser_usb: Don't send a RESET_CHIP for non-existing channels
Recent Leaf firmware versions (>= 3.1.557) do not allow to send commands for non-existing channels. If a command is sent for a non-existing channel, the firmware crashes. Reported-by: Christopher Storah <Christopher.Storah@invetech.com.au> Signed-off-by: Olivier Sobrie <olivier@sobrie.be> Signed-off-by: Ahmed S. Darwish <ahmed.darwish@valeo.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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@ -1503,6 +1503,10 @@ static int kvaser_usb_init_one(struct usb_interface *intf,
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struct kvaser_usb_net_priv *priv;
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int i, err;
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err = kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, channel);
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if (err)
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return err;
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netdev = alloc_candev(sizeof(*priv), MAX_TX_URBS);
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if (!netdev) {
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dev_err(&intf->dev, "Cannot alloc candev\n");
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@ -1607,9 +1611,6 @@ static int kvaser_usb_probe(struct usb_interface *intf,
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usb_set_intfdata(intf, dev);
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for (i = 0; i < MAX_NET_DEVICES; i++)
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kvaser_usb_send_simple_msg(dev, CMD_RESET_CHIP, i);
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err = kvaser_usb_get_software_info(dev);
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if (err) {
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dev_err(&intf->dev,
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