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authorJohan Hovold <johan@kernel.org>2017-01-25 20:02:49 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-26 20:51:15 +0300
commit4ddecf76b5aebb5db4a771ca52c18135291235e3 (patch)
tree82e3ba9166c1e536e5b18020b9a0b3fbc68d0242 /drivers/usb/class
parentbc46e23c34259c842a138f10acc371e4e2cdb287 (diff)
downloadlinux-4ddecf76b5aebb5db4a771ca52c18135291235e3.tar.xz
USB: cdc-acm: fix TIOCGSERIAL flags
The driver reports that it always uses a low-latency mode by returning the ASYNC_LOW_LATENCY flag through TIOCGSERIAL. Even if this behaviour could not be changed, this may have made some sense prior to 7a9a65ced11e ("cdc-acm: Fix long standing abuse of tty->low_latency") which removed the unconditional setting of the corresponding tty low_latency flag (something which had always been broken in itself). Since the driver does not have a low-latency mode, let's drop the flag. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class')
-rw-r--r--drivers/usb/class/cdc-acm.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index e35b1508d3eb..235e305f8473 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -913,7 +913,6 @@ static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
struct serial_struct tmp;
memset(&tmp, 0, sizeof(tmp));
- tmp.flags = ASYNC_LOW_LATENCY;
tmp.xmit_fifo_size = acm->writesize;
tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
tmp.close_delay = acm->port.close_delay / 10;