diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2016-01-11 01:51:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-29 01:19:12 +0300 |
| commit | cd7b4b3944381713038d39240098908ffeec647d (patch) | |
| tree | da77e4ff39194f6d19d600e16f62451c2f806be7 /drivers/tty/mxser.c | |
| parent | b4749b97ae41f02775967bd109a15b2e223f86be (diff) | |
| download | linux-cd7b4b3944381713038d39240098908ffeec647d.tar.xz | |
tty: mxser: Remove ASYNC_CLOSING
The tty core no longer provides ASYNC_CLOSING. Use private flag for
same purpose, which is to clear the fifos at each and every interrupt
during driver close(). The driver uses this sledgehammer approach because
its close/shutdown sequence is hopelessly borked.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/mxser.c')
| -rw-r--r-- | drivers/tty/mxser.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index e9600cece8da..9a0791e523b5 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -254,6 +254,7 @@ struct mxser_port { int xmit_head; int xmit_tail; int xmit_cnt; + int closing; struct ktermios normal_termios; @@ -1081,6 +1082,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) return; if (tty_port_close_start(port, tty, filp) == 0) return; + info->closing = 1; mutex_lock(&port->mutex); mxser_close_port(port); mxser_flush_buffer(tty); @@ -1091,6 +1093,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) mxser_shutdown_port(port); clear_bit(ASYNCB_INITIALIZED, &port->flags); mutex_unlock(&port->mutex); + info->closing = 0; /* Right now the tty_port set is done outside of the close_end helper as we don't yet have everyone using refcounts */ tty_port_close_end(port, tty); @@ -2253,10 +2256,8 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id) break; iir &= MOXA_MUST_IIR_MASK; tty = tty_port_tty_get(&port->port); - if (!tty || - (port->port.flags & ASYNC_CLOSING) || - !(port->port.flags & - ASYNC_INITIALIZED)) { + if (!tty || port->closing || + !(port->port.flags & ASYNC_INITIALIZED)) { status = inb(port->ioaddr + UART_LSR); outb(0x27, port->ioaddr + UART_FCR); inb(port->ioaddr + UART_MSR); |