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| author | Johan Hovold <johan@kernel.org> | 2017-01-25 18:02:49 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-26 18:51:15 +0100 |
| commit | 4ddecf76b5aebb5db4a771ca52c18135291235e3 (patch) | |
| tree | 82e3ba9166c1e536e5b18020b9a0b3fbc68d0242 /drivers/usb/class | |
| parent | bc46e23c34259c842a138f10acc371e4e2cdb287 (diff) | |
| download | linux-stable-4ddecf76b5aebb5db4a771ca52c18135291235e3.tar.gz linux-stable-4ddecf76b5aebb5db4a771ca52c18135291235e3.tar.bz2 linux-stable-4ddecf76b5aebb5db4a771ca52c18135291235e3.zip | |
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.c | 1 |
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; |