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| author |   Nikola Diklic-Perin <diklic.perin.nikola@gmail.com> | 2011-09-23 10:59:43 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-26 16:38:44 -0700 |
| commit | cf16807b61d15e42b20407c954a01a3774520ea7 (patch) | |
| tree | 93a60da8ed0cc30094e381ce6dd954c568fdc741 /drivers/tty | |
| parent | drivers/tty: don't use the byte channel handle as a parameter in ehv_bytechan.c (diff) | |
| download | linux-dev-cf16807b61d15e42b20407c954a01a3774520ea7.tar.xz linux-dev-cf16807b61d15e42b20407c954a01a3774520ea7.zip | |
tty/n_gsm: fix bug in tiocmset
Clear bitmask was not inverted before masking modem_tx.
Calling ioctl(fd, TIOCMBIC, TIOCM_RTS) results in:
[ 197.430000] pre_modem_tx: 0x00000006
[ 197.430000] clear: 0x00000004
[ 197.430000] set: 0x00000000
[ 197.440000] post_modem_tx: 0x00000004
which is wrong.
Signed-off-by: Nikola Diklic-Perin <diklic.perin.nikola@gmail.com>
Acked-by: Alan Cox <alan@linx.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/n_gsm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 8d7766bfef87..da3b31a98654 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2989,7 +2989,7 @@ static int gsmtty_tiocmset(struct tty_struct *tty, struct gsm_dlci *dlci = tty->driver_data; unsigned int modem_tx = dlci->modem_tx; - modem_tx &= clear; + modem_tx &= ~clear; modem_tx |= set; if (modem_tx != dlci->modem_tx) { |