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| author | Chris Brandt <chris.brandt@renesas.com> | 2020-11-11 08:12:09 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-18 19:20:29 +0100 |
| commit | cbad9668929cdd15d6b005f058b8d9df1bdb7f9f (patch) | |
| tree | d2137e3c647094966acbf8ed3573f99b7a8847d7 | |
| parent | f988e9c85cfb80a1887c6d3bdf2d9057dd28c685 (diff) | |
| download | linux-stable-cbad9668929cdd15d6b005f058b8d9df1bdb7f9f.tar.gz linux-stable-cbad9668929cdd15d6b005f058b8d9df1bdb7f9f.tar.bz2 linux-stable-cbad9668929cdd15d6b005f058b8d9df1bdb7f9f.zip | |
usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode
commit 6d853c9e4104b4fc8d55dc9cd3b99712aa347174 upstream.
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 <stable@vger.kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Link: https://lore.kernel.org/r/20201111131209.3977903-1-chris.brandt@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index ed99d98172f4..16c98e718001 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1706,6 +1706,15 @@ 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; andrey.arapov@gmail.com */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, |