The patch titled
io_ti: lock mcr and msr shadows properly
has been added to the -mm tree. Its filename is
io_ti-lock-mcr-and-msr-shadows-properly.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: io_ti: lock mcr and msr shadows properly
From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/io_ti.c | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN drivers/usb/serial/io_ti.c~io_ti-lock-mcr-and-msr-shadows-properly drivers/usb/serial/io_ti.c
--- a/drivers/usb/serial/io_ti.c~io_ti-lock-mcr-and-msr-shadows-properly
+++ a/drivers/usb/serial/io_ti.c
@@ -2560,9 +2560,11 @@ static int edge_tiocmset (struct usb_ser
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int mcr;
+ unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
mcr = edge_port->shadow_mcr;
if (set & TIOCM_RTS)
mcr |= MCR_RTS;
@@ -2579,6 +2581,7 @@ static int edge_tiocmset (struct usb_ser
mcr &= ~MCR_LOOPBACK;
edge_port->shadow_mcr = mcr;
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
TIRestoreMCR (edge_port, mcr);
@@ -2591,9 +2594,12 @@ static int edge_tiocmget(struct usb_seri
unsigned int result = 0;
unsigned int msr;
unsigned int mcr;
+ unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
msr = edge_port->shadow_msr;
mcr = edge_port->shadow_mcr;
result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
@@ -2605,6 +2611,7 @@ static int edge_tiocmget(struct usb_seri
dbg("%s -- %x", __FUNCTION__, result);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
return result;
}
_
Patches currently in -mm which might be from alan@xxxxxxxxxxxxxxxxxxx are
origin.patch
libata-isolate-and-rework-cable-logic.patch
pata_amd-fix-sparse-warning.patch
8390-split-8390-support-into-a-pausing-and-a-non-pausing-driver-core.patch
parisc-new-termios-definitions.patch
megaraid-outb_p-extermination.patch
usb-serial-prepare-for-bkl-push-down.patch
ftdi_sio-note-missing-locking.patch
usb-serial-note-mos7480-and-option-dont-lock-modem-status.patch
io_ti-lock-mcr-and-msr-shadows-properly.patch
iuu_phoenix-lock-priv-tiostatus-properly.patch
kobil_sct-get-rid-of-unneeded-priv-line_state.patch
ti_usb_3410_5052-extend-locking-to-msr-and-shadow-mcr.patch
git-watchdog.patch
crisv10-prepare-for-bkl-push-down.patch
fix-tty-speed-handling-on-8250.patch
uart_get_baud_rate-stop-mangling-termios.patch
do_task_stat-dont-take-rcu_read_lock.patch
amiserial-prepare-for-locking-relaxation-in-caller.patch
cyclades-prepare-for-relaxed-locking-in-callers.patch
epca-lock_kernel-push-down.patch
esp-lock_kernel-push-down.patch
isicom-prepare-for-lock_kernel-push-down.patch
isicom-istallion-prepare-for-lock_kernel-pushdown.patch
mxser-prepare-for-bkl-pushdown.patch
nozomi-prepare-for-bkl-pushdown.patch
riscom8-prepare-for-bkl-pushdown.patch
rocket-prepare-for-bkl-pushdown.patch
serial167-prepare-to-push-bkl-down-into-drivers.patch
specialix-prepare-for-bkl-pushdown.patch
stallion-prepare-for-bkl-push-down.patch
sx-prepare-for-bkl-pushdown.patch
synclink-series-prepare-for-bkl-pushdown.patch
viocons-bkl-locking.patch
vt_ioctl-prepare-for-bkl-push-down.patch
isdn_tty-prepare-for-bkl-push-down.patch
68360serial-note-that-there-isnt-any-info-mcr-locking.patch
serial_core-prepare-for-bkl-push-down.patch
tty-bkl-pushdown.patch
tty-bkl-pushdown-fix1.patch
redo-locking-of-tty-pgrp.patch
put_pid-make-sure-we-dont-free-the-live-pid.patch
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