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author | Tilman Schmidt <tilman@imap.cc> | 2015-07-14 00:37:13 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-01 12:07:36 +0200 |
commit | c6419a861e56cf6c6446bf0e8f9c75557c2a3a02 (patch) | |
tree | 9f85da2fdbb94fef3e61a796c5ee8d9711975183 /net/ipv4/datagram.c | |
parent | 8d228c93f31c90894fa86c597beb42b67c5ac978 (diff) |
isdn/gigaset: reset tty->receive_room when attaching ser_gigaset
[ Upstream commit fd98e9419d8d622a4de91f76b306af6aa627aa9c ]
Commit 79901317ce80 ("n_tty: Don't flush buffer when closing ldisc"),
first merged in kernel release 3.10, caused the following regression
in the Gigaset M101 driver:
Before that commit, when closing the N_TTY line discipline in
preparation to switching to N_GIGASET_M101, receive_room would be
reset to a non-zero value by the call to n_tty_flush_buffer() in
n_tty's close method. With the removal of that call, receive_room
might be left at zero, blocking data reception on the serial line.
The present patch fixes that regression by setting receive_room
to an appropriate value in the ldisc open method.
Fixes: 79901317ce80 ("n_tty: Don't flush buffer when closing ldisc")
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv4/datagram.c')
0 files changed, 0 insertions, 0 deletions