linux/drivers/tty/vt
Nicolas Pitre 1bf931ab94 vcs: poll(): cope with a deallocated vt
When VT_DISALLOCATE is used on a vt, user space waiting with poll() on
the corresponding /dev/vcs device is not awakened. This is now fixed by
returning POLLHUP|POLLERR to user space.

Also, in the normal screen update case, we don't set POLLERR anymore as
POLLPRI alone is a much more logical response in a non-error situation,
saving some confusion on the user space side. The only known user app
making use of poll() on /dev/vcs* is BRLTTY which is known to cope with
that change already, so the risk of breakage is pretty much nonexistent.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-18 13:47:55 +01:00
..
.gitignore
consolemap.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
cp437.uni
defkeymap.c_shipped
defkeymap.map
keyboard.c TTY/Serial driver patches for 4.19-rc1 2018-08-18 10:50:41 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
selection.c vt: selection: take screen contents from uniscr if available 2018-07-21 09:18:27 +02:00
vc_screen.c vcs: poll(): cope with a deallocated vt 2019-01-18 13:47:55 +01:00
vt_ioctl.c Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
vt.c vcsa: clamp header values when they don't fit 2019-01-18 13:47:55 +01:00