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cdc-acm: Add DISABLE_ECHO quirk for Microchip/SMSC chip
authorJoakim Tjernlund <joakim.tjernlund@infinera.com>
Fri, 5 Jun 2020 10:54:18 +0000 (12:54 +0200)
committerSasha Levin <sashal@kernel.org>
Tue, 30 Jun 2020 19:38:41 +0000 (15:38 -0400)
commit8de06e1d3b21c23b4eb9362d82557db6bbe18774
treed3d57202c2d412228d1a58819303c791acdd75eftree | snapshot (tar.gz zip)
parentdbf2c1a8a2baa68aaa9862e02c34f31c55478055commit | diff
cdc-acm: Add DISABLE_ECHO quirk for Microchip/SMSC chip

commit 03894573f2913181ee5aae0089f333b2131f2d4b upstream.

USB_DEVICE(0x0424, 0x274e) can send data before cdc_acm is ready,
causing garbage chars on the TTY causing stray input to the shell
and/or login prompt.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Cc: stable@vger.kernel.org
Acked-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20200605105418.22263-1-joakim.tjernlund@infinera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c diff | blob | blame | history