| From 4387b3dbb079d482d3c2b43a703ceed4dd27ed28 Mon Sep 17 00:00:00 2001 |
| From: Brant Merryman <brant.merryman@silabs.com> |
| Date: Fri, 26 Jun 2020 04:22:58 +0000 |
| Subject: USB: serial: cp210x: enable usb generic throttle/unthrottle |
| |
| From: Brant Merryman <brant.merryman@silabs.com> |
| |
| commit 4387b3dbb079d482d3c2b43a703ceed4dd27ed28 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: 39a66b8d22a3 ("[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> |
| |
| --- |
| drivers/usb/serial/cp210x.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/drivers/usb/serial/cp210x.c |
| +++ b/drivers/usb/serial/cp210x.c |
| @@ -272,6 +272,8 @@ static struct usb_serial_driver cp210x_d |
| .break_ctl = cp210x_break_ctl, |
| .set_termios = cp210x_set_termios, |
| .tx_empty = cp210x_tx_empty, |
| + .throttle = usb_serial_generic_throttle, |
| + .unthrottle = usb_serial_generic_unthrottle, |
| .tiocmget = cp210x_tiocmget, |
| .tiocmset = cp210x_tiocmset, |
| .attach = cp210x_attach, |