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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
…
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
…
defkeymap.map
…
digi1.h
…
digiFep1.h
…
digiPCI.h
…
ds1302.c
…
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
…
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
…
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
…
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
…
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
…
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
…
snsc.h
…
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
…
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
…
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