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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2009-06-11 12:24:17 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-11 08:50:56 -0700
commitfcc8ac1825d3d0fb81f73bc1a80ebc863168bb56 (patch)
tree737f7209430fd319ca257df62c9b1e64587d5a8b /drivers/char/synclinkmp.c
parent65a29f60e121ae5116ac1736b50a237bf2db3225 (diff)
downloadop-kernel-dev-fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56.zip
op-kernel-dev-fcc8ac1825d3d0fb81f73bc1a80ebc863168bb56.tar.gz
tty: Add carrier processing on close to the tty_port core
Some drivers implement this internally, others miss it out. Push the behaviour into the core code as that way everyone will do it consistently. Update the dtr rts method to raise or lower depending upon flags. Having a single method in this style fits most of the implementations more cleanly than two funtions. We need this in place before we tackle the USB side Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/synclinkmp.c')
-rw-r--r--drivers/char/synclinkmp.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 26de60e..6f727e3 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -3277,13 +3277,16 @@ static int carrier_raised(struct tty_port *port)
return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
}
-static void raise_dtr_rts(struct tty_port *port)
+static void dtr_rts(struct tty_port *port, int on)
{
SLMP_INFO *info = container_of(port, SLMP_INFO, port);
unsigned long flags;
spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ if (on)
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ else
+ info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -3746,7 +3749,7 @@ static void add_device(SLMP_INFO *info)
static const struct tty_port_operations port_ops = {
.carrier_raised = carrier_raised,
- .raise_dtr_rts = raise_dtr_rts,
+ .dtr_rts = dtr_rts,
};
/* Allocate and initialize a device instance structure
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