USB: usbtmc: remove unnecessary memory allocation
Inside usbtmc_ioctl_clear_out_halt()/usbtmc_ioctl_clear_in_halt(), usb_clear_halt() needn't any buffer to pass in, so remove the unnecessary memory allocation. Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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c33c888b58
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@ -718,50 +718,32 @@ exit:
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static int usbtmc_ioctl_clear_out_halt(struct usbtmc_device_data *data)
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{
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u8 *buffer;
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int rv;
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buffer = kmalloc(2, GFP_KERNEL);
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if (!buffer)
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return -ENOMEM;
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rv = usb_clear_halt(data->usb_dev,
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usb_sndbulkpipe(data->usb_dev, data->bulk_out));
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if (rv < 0) {
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dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n",
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rv);
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goto exit;
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return rv;
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}
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rv = 0;
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exit:
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kfree(buffer);
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return rv;
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return 0;
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}
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static int usbtmc_ioctl_clear_in_halt(struct usbtmc_device_data *data)
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{
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u8 *buffer;
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int rv;
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buffer = kmalloc(2, GFP_KERNEL);
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if (!buffer)
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return -ENOMEM;
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rv = usb_clear_halt(data->usb_dev,
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usb_rcvbulkpipe(data->usb_dev, data->bulk_in));
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if (rv < 0) {
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dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n",
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rv);
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goto exit;
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return rv;
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}
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rv = 0;
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exit:
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kfree(buffer);
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return rv;
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return 0;
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}
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static int get_capabilities(struct usbtmc_device_data *data)
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