[PATCH 4.19 90/98] cdc-acm: Add DISABLE_ECHO quirk for GE HealthCare UI Controller

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4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ian Ray <ian.ray@xxxxxxxxxxxxxxxx>

commit 0b00583ecacb0b51712a5ecd34cf7e6684307c67 upstream.

USB_DEVICE(0x1901, 0x0006) may send data before cdc_acm is ready, which
may be misinterpreted in the default N_TTY line discipline.

Signed-off-by: Ian Ray <ian.ray@xxxxxxxxxxxxxxxx>
Acked-by: Oliver Neuku <oneukum@xxxxxxxx>
Cc: stable <stable@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240814072905.2501-1-ian.ray@xxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/class/cdc-acm.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1807,6 +1807,9 @@ static const struct usb_device_id acm_id
 	{ USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */
 	.driver_info = SINGLE_RX_URB,
 	},
+	{ USB_DEVICE(0x1901, 0x0006), /* GE Healthcare Patient Monitor UI Controller */
+	.driver_info = DISABLE_ECHO, /* DISABLE ECHO in termios flag */
+	},
 	{ USB_DEVICE(0x1965, 0x0018), /* Uniden UBC125XLT */
 	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
 	},






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