Amit Shah b353a6b821 virtio: console: Add reference counting for port struct ...

When a port got hot-unplugged, when a port was open, any file operation
after the unplugging resulted in a crash. This is fixed by ref-counting
the port structure, and releasing it only when the file is closed.

This splits the unplug operation in two parts: first marks the port
as unavailable, removes all the buffers in the vqs and removes the port
from the per-device list of ports. The second stage, invoked when all
references drop to zero, releases the chardev and frees all other memory.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

2010-10-21 17:44:03 +10:30

..

agp

drm/i915,agp/intel: Add second set of PCI-IDs for B43

2010-09-17 08:22:30 +01:00

hw_random

Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2010-09-07 14:35:16 -07:00

ip2

ip2: return -EFAULT on copy_to_user errors

2010-08-23 18:17:21 -07:00

ipmi

ipmi: fix hardcoded ipmi device exit path warning

2010-09-22 17:22:40 -07:00

mwave

mwave: fix read buffer overflow

2009-09-24 07:21:03 -07:00

pcmcia

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2010-08-09 21:05:52 -07:00

rio

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

tpm

tpm_tis: fix subsequent suspend failures

2010-07-26 10:25:45 +10:00

xilinx_hwicap

of: Fix missing includes

2010-08-16 23:44:49 -06:00

.gitignore

…

amiserial.c

tty: release BTM while sleeping in block_til_ready

2010-08-10 13:47:44 -07:00

apm-emulation.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

applicom.c

drivers/char/applicom.c: use memdup_user

2010-05-27 09:12:50 -07:00

applicom.h

…

bfin_jtag_comm.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

bfin-otp.c

const: constify remaining file_operations

2009-10-01 16:11:11 -07:00

briq_panel.c

tty: replace BKL with a new tty_lock

2010-08-10 13:47:43 -07:00

bsr.c

of/address: Clean up function declarations

2010-08-01 01:42:42 -06:00

cd1865.h

…

consolemap.c

consolemap: indentation & braces disagree - reindent

2009-01-06 15:59:30 -08:00

cp437.uni

unicode table for cp437

2008-12-13 11:25:49 -08:00

cs5535_gpio.c

drivers: Remove BKL from cs5535_gpio

2009-10-14 17:36:48 +02:00

cyclades.c

tty: introduce wait_event_interruptible_tty

2010-08-10 13:47:43 -07:00

defkeymap.c_shipped

Fix default compose table initialization

2008-03-03 14:53:16 -08:00

defkeymap.map

…

digi1.h

…

digiFep1.h

…

digiPCI.h

…

ds1302.c

rtc: use bcd2bin/bin2bcd

2008-10-20 08:52:41 -07:00

ds1620.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

dsp56k.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

dtlk.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

efirtc.c

efirtc: explicitly set llseek to no_llseek

2009-12-16 07:19:59 -08:00

epca.c

epca: Kill the big kernel lock

2010-08-10 13:47:40 -07:00

epca.h

epca: use tty_port

2008-07-20 17:12:36 -07:00

epcaconfig.h

…

generic_nvram.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

generic_serial.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

genrtc.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

hangcheck-timer.c

Input: sysrq - drop tty argument form handle_sysrq()

2010-08-21 00:34:45 -07:00

hpet.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

hvc_beat.c

Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6

2010-02-25 15:38:37 -08:00

hvc_console.c

Input: sysrq - drop tty argument form handle_sysrq()

2010-08-21 00:34:45 -07:00

hvc_console.h

hvc_console: make the ops pointer const.

2010-02-24 14:22:32 +10:30

hvc_irq.c

hvc_console: Call free_irq() only if request_irq() was successful

2009-01-13 14:48:01 +11:00

hvc_iseries.c

Merge branch 'for-next' into for-linus

2010-03-08 16:55:37 +01:00

hvc_iucv.c

Add param ops struct for hvc_iucv driver.

2010-08-11 23:04:16 +09:30

hvc_rtas.c

hvc_console: make the ops pointer const.

2010-02-24 14:22:32 +10:30

hvc_tile.c

arch/tile: catch up on various minor cleanups.

2010-07-06 13:42:15 -04:00

hvc_udbg.c

hvc_console: make the ops pointer const.

2010-02-24 14:22:32 +10:30

hvc_vio.c

hvc_console: make the ops pointer const.

2010-02-24 14:22:32 +10:30

hvc_xen.c

hvc_console: make the ops pointer const.

2010-02-24 14:22:32 +10:30

hvcs.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

hvsi.c

Input: sysrq - drop tty argument form handle_sysrq()

2010-08-21 00:34:45 -07:00

i8k.c

procfs: Push down the bkl from ioctl

2010-05-17 03:06:12 +02:00

isicom.c

isicom: kill off the BKL

2010-08-10 13:47:40 -07:00

istallion.c

tty: introduce wait_event_interruptible_tty

2010-08-10 13:47:43 -07:00

Kconfig

pc8736x_gpio: depends on X86_32

2010-08-12 08:43:29 -07:00

keyboard.c

tty: Move the vt_tty field from the vc_data into the standard tty_port

2010-08-10 13:47:42 -07:00

lp.c

lp: move compat_ioctl handling into lp.c

2009-12-10 22:55:36 +01:00

Makefile

tty: implement BTM as mutex instead of BKL

2010-08-10 13:47:44 -07:00

mbcs.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

mbcs.h

MBCS: convert dmareadlock to mutex

2008-02-07 08:42:25 -08:00

mem.c

char: Mark /dev/zero and /dev/kmem as not capable of writeback

2010-09-22 09:48:47 +02:00

misc.c

char: add WARN_ON() in misc_deregister()

2010-08-09 20:45:06 -07:00

mmtimer.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

moxa.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

moxa.h

Char: moxa, cleanup rx/tx

2008-04-30 08:29:43 -07:00

mspec.c

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

mxser.c

mxser: remove unnesesary NULL check

2010-08-10 13:47:45 -07:00

mxser.h

mxser: convert large macros to functions

2008-04-30 08:29:49 -07:00

n_gsm.c

drivers/char/n_gsm.c: add missing spin_unlock_irqrestore

2010-08-11 08:59:20 -07:00

n_hdlc.c

tty: replace BKL with a new tty_lock

2010-08-10 13:47:43 -07:00

n_r3964.c

tty: introduce wait_event_interruptible_tty

2010-08-10 13:47:43 -07:00

n_tty.c

tty: Add EXTPROC support for LINEMODE

2010-08-10 13:47:39 -07:00

nozomi.c

kfifo: fix kfifo miss use of nozami.c

2010-08-11 08:59:23 -07:00

nsc_gpio.c

…

nvram.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

nwbutton.c

…

nwbutton.h

…

nwflash.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

pc8736x_gpio.c

drivers: Remove BKL from pc8736x_gpio

2009-10-14 17:36:52 +02:00

ppdev.c

drivers/char/ppdev.c: use kasprintf

2010-05-27 09:12:50 -07:00

ps3flash.c

drop unused dentry argument to ->fsync

2010-05-27 22:05:02 -04:00

pty.c

tty: fix fu_list abuse

2010-08-18 08:35:47 -04:00

ramoops.c

char drivers: RAM oops/panic logger

2010-05-27 09:12:50 -07:00

random.c

random: Reorder struct entropy_store to remove padding on 64bits

2010-07-31 19:58:00 +08:00

raw.c

drivers: Push down BKL into various drivers

2010-05-17 05:27:41 +02:00

riscom8_reg.h

…

riscom8.c

riscom8: kill use of lock_kernel

2010-08-10 13:47:40 -07:00

riscom8.h

tty: add more tty_port fields

2008-07-20 17:12:38 -07:00

rocket_int.h

tty: rocketport uses different port flags to everyone else

2009-01-02 10:19:39 -08:00

rocket.c

rocket: add a mutex_unlock()

2010-08-23 18:17:21 -07:00

rocket.h

tty: rocketport uses different port flags to everyone else

2009-01-02 10:19:39 -08:00

rtc.c

of/device: Replace struct of_device with struct platform_device

2010-08-06 09:25:50 -06:00

scc.h

m68k: atari - Rename "mfp" to "st_mfp"

2009-02-22 09:23:02 -08:00

scx200_gpio.c

drivers: Remove BKL from scx200_gpio

2009-10-14 17:36:53 +02:00

selection.c

tty: remove tty_lock_nested

2010-08-10 13:47:44 -07:00

ser_a2232.c

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

ser_a2232.h

…

ser_a2232fw.ax

…

ser_a2232fw.h

…

serial167.c

tty: release BTM while sleeping in block_til_ready

2010-08-10 13:47:44 -07:00

snsc_event.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

snsc.c

device create: char: convert device_create_drvdata to device_create

2008-10-16 09:24:42 -07:00

snsc.h

Convert asm/semaphore.h users to linux/semaphore.h

2008-04-18 22:22:54 -04:00

sonypi.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

specialix_io8.h

tty: add more tty_port fields

2008-07-20 17:12:38 -07:00

specialix.c

tty: release BTM while sleeping in block_til_ready

2010-08-10 13:47:44 -07:00

stallion.c

stallion: prune lock_kernel calls

2010-08-10 13:47:40 -07:00

sx.c

tty: replace BKL with a new tty_lock

2010-08-10 13:47:43 -07:00

sx.h

Char: char/serial, remove SERIAL_TYPE_NORMAL redefines

2008-02-07 08:42:33 -08:00

sxboards.h

…

sxwindow.h

…

synclink_gt.c

synclink: add mutex_unlock() on error path

2010-08-23 18:17:21 -07:00

synclink.c

tty: release BTM while sleeping in block_til_ready

2010-08-10 13:47:44 -07:00

synclinkmp.c

tty: release BTM while sleeping in block_til_ready

2010-08-10 13:47:44 -07:00

sysrq.c

Input: sysrq - drop tty argument form handle_sysrq()

2010-08-21 00:34:45 -07:00

tb0219.c

mips: Remove BKL from tb0219

2009-10-14 17:36:53 +02:00

tlclk.c

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

toshiba.c

tosh: Use non bkl ioctl

2010-01-04 12:31:21 -08:00

tty_audit.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

tty_buffer.c

tty: fix obsolete comment on tty_insert_flip_string_fixed_flag

2010-05-21 09:34:30 -07:00

tty_io.c

tty: fix tty_line must not be equal to number of allocated tty pointers in tty driver

2010-09-03 17:29:04 -07:00

tty_ioctl.c

tty: Add EXTPROC support for LINEMODE

2010-08-10 13:47:39 -07:00

tty_ldisc.c

tty: remove tty_lock_nested

2010-08-10 13:47:44 -07:00

tty_mutex.c

tty: implement BTM as mutex instead of BKL

2010-08-10 13:47:44 -07:00

tty_port.c

tty: release BTM while sleeping in block_til_ready

2010-08-10 13:47:44 -07:00

uv_mmtimer.c

x86, UV: Fix RTC latency bug by reading replicated cachelines

2010-01-27 11:33:53 +01:00

vc_screen.c

tty: replace BKL with a new tty_lock

2010-08-10 13:47:43 -07:00

viotape.c

of: Always use 'struct device.of_node' to get device node pointer.

2010-05-18 16:10:44 -06:00

virtio_console.c

virtio: console: Add reference counting for port struct

2010-10-21 17:44:03 +10:30

vme_scc.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

vt_ioctl.c

Input: use PIT_TICK_RATE in vt beep ioctl

2010-08-28 21:39:09 -07:00

vt.c

vt: Fix console corruption on driver hand-over.

2010-09-03 17:29:03 -07:00