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| author | Olof Johansson <olof@lixom.net> | 2013-04-03 05:33:58 +0400 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2013-04-03 05:33:58 +0400 |
| commit | 06b851e58b73a268f8092c2d990f697b2e7c53bd (patch) | |
| tree | a44e10462a39202b60636f8b102376a9c69169c1 /drivers/usb/serial/mos7840.c | |
| parent | 5f03dc2002f5dc85ce87e69caff7f28f17f5c9b2 (diff) | |
| parent | 17e7979f83c1de305fa81efb0aa7a3a56bd8121c (diff) | |
| download | linux-06b851e58b73a268f8092c2d990f697b2e7c53bd.tar.xz | |
Merge branch 'lpc32xx/defconfig' of git://git.antcom.de/linux-2.6 into next/soc
* 'lpc32xx/defconfig' of git://git.antcom.de/linux-2.6: (604 commits)
ARM: LPC32xx: defconfig update: Cleanup (EXPERIMENTAL)
ARM: LPC32xx: defconfig update: Remove the museum NAND option
ARM: LPC32xx: defconfig update: Default drivers and cleanup
ARM: LPC32xx: defconfig update: gpio and keys
+ Linux 3.9-rc4
Signed-off-by: Olof Johansson <olof@lixom.net>
Conflicts:
arch/arm/Kconfig
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 809fb329eca5..b8051fa61911 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -219,7 +219,6 @@ struct moschip_port { char open; char open_ports; wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ - wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ int delta_msr_cond; struct async_icount icount; struct usb_serial_port *port; /* loop back to the owner of this object */ @@ -423,6 +422,9 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) icount->rng++; smp_wmb(); } + + mos7840_port->delta_msr_cond = 1; + wake_up_interruptible(&port->port->delta_msr_wait); } } @@ -1127,7 +1129,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) /* initialize our wait queues */ init_waitqueue_head(&mos7840_port->wait_chase); - init_waitqueue_head(&mos7840_port->delta_msr_wait); /* initialize our icount structure */ memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); @@ -2017,8 +2018,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, mos7840_port->read_urb_busy = false; } } - wake_up(&mos7840_port->delta_msr_wait); - mos7840_port->delta_msr_cond = 1; dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, mos7840_port->shadowLCR); } @@ -2219,13 +2218,18 @@ static int mos7840_ioctl(struct tty_struct *tty, while (1) { /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ mos7840_port->delta_msr_cond = 0; - wait_event_interruptible(mos7840_port->delta_msr_wait, - (mos7840_port-> + wait_event_interruptible(port->delta_msr_wait, + (port->serial->disconnected || + mos7840_port-> delta_msr_cond == 1)); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + cnow = mos7840_port->icount; smp_rmb(); if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |