USB: serial: cp210x: enable usb generic throttle/unthrottle
commit5.4-rM2-2.2.x-imx-squashed4387b3dbb0
upstream. Assign the .throttle and .unthrottle functions to be generic function in the driver structure to prevent data loss that can otherwise occur if the host does not enable USB throttling. Signed-off-by: Brant Merryman <brant.merryman@silabs.com> Co-developed-by: Phu Luu <phu.luu@silabs.com> Signed-off-by: Phu Luu <phu.luu@silabs.com> Link: https://lore.kernel.org/r/57401AF3-9961-461F-95E1-F8AFC2105F5E@silabs.com [ johan: fix up tags ] Fixes:39a66b8d22
("[PATCH] USB: CP2101 Add support for flow control") Cc: stable <stable@vger.kernel.org> # 2.6.12 Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -272,6 +272,8 @@ static struct usb_serial_driver cp210x_device = {
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.break_ctl = cp210x_break_ctl,
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.set_termios = cp210x_set_termios,
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.tx_empty = cp210x_tx_empty,
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.throttle = usb_serial_generic_throttle,
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.unthrottle = usb_serial_generic_unthrottle,
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.tiocmget = cp210x_tiocmget,
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.tiocmset = cp210x_tiocmset,
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.attach = cp210x_attach,
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