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usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode

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Renesas R-Car and RZ/G SoCs have a firmware download mode over USB.
However, on reset a banner string is transmitted out which is not expected
to be echoed back and will corrupt the protocol.

Cc: stable <[email protected]>
Acked-by: Oliver Neukum <[email protected]>
Signed-off-by: Chris Brandt <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Chris Brandt authored and Greg Kroah-Hartman committed 2020-11-13 15:26:49 +01:00
1 parent 4df694a477
commit 6d853c9e41
1 file changed
+9
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drivers/usb/class/cdc-acm.c
+9
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@@ -1693,6 +1693,15 @@ static const struct usb_device_id acm_ids[] = {
{ USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
},
{ USB_DEVICE(0x045b, 0x023c), /* Renesas USB Download mode */
.driver_info = DISABLE_ECHO, /* Don't echo banner */
},
{ USB_DEVICE(0x045b, 0x0248), /* Renesas USB Download mode */
.driver_info = DISABLE_ECHO, /* Don't echo banner */
},
{ USB_DEVICE(0x045b, 0x024D), /* Renesas USB Download mode */
.driver_info = DISABLE_ECHO, /* Don't echo banner */
},
{ USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; [email protected] */
.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
},