Amit Shah 61ffac7336 virtio: console: return -ENODEV on all read operations after unplug ...

commit 96f97a8391 upstream.

If a port gets unplugged while a user is blocked on read(), -ENODEV is
returned.  However, subsequent read()s returned 0, indicating there's no
host-side connection (but not indicating the device went away).

This also happened when a port was unplugged and the user didn't have
any blocking operation pending.  If the user didn't monitor the SIGIO
signal, they won't have a chance to find out if the port went away.

Fix by returning -ENODEV on all read()s after the port gets unplugged.
write() already behaves this way.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-08-14 22:59:09 -07:00

..

agp

parisc: agp/parisc-agp: allow binding of user memory to the AGP GART

2013-08-11 18:35:20 -07:00

hw_random

hwrng: bcm2835: fix MODULE_LICENSE tag

2013-08-11 18:35:26 -07:00

ipmi

ipmi: ipmi_devintf: compat_ioctl method fails to take ipmi_mutex

2013-05-16 13:49:25 -07:00

mwave

8250: three way resolve of the 8250 diffs

2012-07-17 09:11:50 -07:00

pcmcia

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

tpm

TPM: Retry SaveState command in suspend path

2013-04-17 09:31:32 -05:00

xilinx_hwicap

char: remove use of __devexit

2012-11-21 12:55:19 -08:00

apm-emulation.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm

2012-04-05 17:34:30 -07:00

applicom.c

applicom: use correct array offset

2013-03-15 12:23:48 -07:00

applicom.h

…

bfin-otp.c

…

bsr.c

powerpc/BSR: cleanup the error path of bsr_init

2012-07-17 10:27:38 -07:00

ds1302.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

ds1620.c

ds1620: single_open() leak

2013-05-05 00:11:29 -04:00

dsp56k.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

dtlk.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

efirtc.c

rtc: single_open() leaks

2013-05-05 00:12:29 -04:00

generic_nvram.c

…

genrtc.c

rtc: single_open() leaks

2013-05-05 00:12:29 -04:00

hangcheck-timer.c

…

hpet.c

vm: convert HPET mmap to vm_iomap_memory() helper

2013-04-19 09:46:39 -07:00

i8k.c

module_param: make bool parameters really bool (drivers & misc)

2012-01-13 09:32:20 +10:30

Kconfig

tty: Added a CONFIG_TTY option to allow removal of TTY

2013-01-18 16:15:27 -08:00

lp.c

Char: lp, protect LPGETSTATUS with port_mutex

2013-05-16 18:08:58 -07:00

Makefile

IPMI: Change link order

2012-10-16 18:07:12 -07:00

mbcs.c

char: remove use of __devinitconst

2012-11-21 12:55:19 -08:00

mbcs.h

…

mem.c

aio: don't include aio.h in sched.h

2013-05-07 20:16:25 -07:00

misc.c

drivers/char/misc.c:misc_register(): do not loop on misc_list unconditionally

2013-02-27 19:10:21 -08:00

mmtimer.c

drivers/char/mmtimer.c: Remove useless kfree

2012-09-26 13:20:40 -07:00

msm_smd_pkt.c

…

mspec.c

mm: kill vma flag VM_RESERVED and mm->reserved_vm counter

2012-10-09 16:22:19 +09:00

nsc_gpio.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

nvram.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

nwbutton.c

drivers/char: removes unnecessary semicolon

2012-09-26 13:20:39 -07:00

nwbutton.h

…

nwflash.c

Merge branch 'late/fixes' into fixes

2012-10-07 07:22:32 -07:00

pc8736x_gpio.c

pc8736x_gpio: use platform_device_unregister in pc8736x_gpio_cleanup()

2012-10-24 15:52:29 -07:00

ppdev.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

ps3flash.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

random.c

random: fix accounting race condition with lockless irq entropy_count update

2013-05-24 16:22:52 -07:00

raw.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

rtc.c

drivers/char: removes unnecessary semicolon

2012-09-26 13:20:39 -07:00

scx200_gpio.c

…

snsc_event.c

…

snsc.c

…

snsc.h

…

sonypi.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

tb0219.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

tile-srom.c

drivers: char: Use PTR_RET function

2013-03-25 13:18:11 -07:00

tlclk.c

drivers/char/tlclk.c: fix error return code

2012-08-16 10:09:15 -07:00

toshiba.c

…

ttyprintk.c

ttyprintk: Fix NULL pointer deref by setting tty_port ops after initializing port

2013-05-21 10:13:23 -07:00

uv_mmtimer.c

…

virtio_console.c

virtio: console: return -ENODEV on all read operations after unplug

2013-08-14 22:59:09 -07:00