linux-toradex.git/drivers/char/vt.c, branch v2.6.27.57

Revert "vt: fix background color on line feed"

2009-02-12T17:31:12+00:00

commit 93f78da405685a756beeaeae4b5e41fcec39eab3 upstream.

This reverts commit c9e587abfdec2c2aaa55fab83bcb4972e2f84f9b, and the
subsequent commits that fixed it up:

 - afa9b649 "fbcon: prevent cursor disappearance after switching to 512
   character font"

 - d850a2fa "vt/fbcon: fix background color on line feed"

 - 7fe3915a "vt/fbcon: update scrl_erase_char after 256/512-glyph font
   switch"

by request of Alan Cox. Quoth Alan:
  "Unfortunately it's wrong and its been causing breakages because
   various apps like ncurses expect our previous (and correct)
   behaviour."

Alexander sent out a similar patch.

Requested-by: Alan Cox 
Tested-by: Jan Engelhardt 
Cc: Alexander V. Lukyanov 
Signed-off-by: Linus Torvalds 
Cc: Tony Jones 
Signed-off-by: Greg Kroah-Hartman

console ASCII glyph 1:1 mapping

2008-12-18T17:13:38+00:00

commit 1c55f18717304100a5f624c923f7cb6511b4116d upstream.

For the console, there is a 1:1 mapping of glyphs which cannot be found
in the current font.  This seems to be meant as a kind of 'emergency
fallback' for fonts without unicode mapping which otherwise would
display nothing readable on the screen.

At the moment it affects all chars for which no substitution character
is defined.  In particular this means that for all chars (>= 128) where
there is no iso88591-1/unicode character (e.g.  control character area)
you'll get the very strange 1:1 mapping of the (cp437) graphics card
glyphs.

I'm pretty sure that the 1:1 mapping should only affect strict ASCII
code characters, i.e.  chars < 128.

The patch limits the mapping as it probably was meant anyway.

Signed-off-by: Ingo Brueckl 
Acked-by: H. Peter Anvin 
Cc: Egmont Koblinger 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

tty: remove resize window special case

2008-08-15T17:34:07+00:00

This moves it to being a tty operation. That removes special cases and now
also means that resize can be picked up by um and other non vt consoles
which may have a resize operation.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

vt: Deadlock workaround

2008-08-05T00:12:07+00:00

2.6.26 corrected the mutex locking on tty resizing to fix the case where
you could get the tty/vt sizing out of sync. That turns out to have a
deadlock.

The actual fix is really major and I've got it lined up as part of the ops
changes for 2.6.28 so for 2.6.26/2.6.27 it is safer to reintroduce this
ages old minor bug.

Signed-off-by: Alan Cox 
Signed-off-by: Linus Torvalds

Merge git://git.infradead.org/embedded-2.6

2008-07-25T19:02:08+00:00

* git://git.infradead.org/embedded-2.6:
  Make console charset translation optional

vt: do not update when the console is blanked

2008-07-24T17:47:30+00:00

vt.c DO_UPDATE macro checks if the console is visible but doesn't check if
the console is blanked.

In fact updating fbcon while the console is blanked is not only
unnecessary but can even cause screen corruption.

Therefore I am adding a simple check on console_blanked in DO_UPDATE.

Signed-off-by: Stefano Stabellini 
Cc: Krzysztof Helt 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vt: hold console_sem across sysfs operations

2008-07-24T17:47:30+00:00

Hold console sem while creating/destroying sysfs files.  Serialisation is
so far done by BKL held in tty release_dev and chrdev_open, but no other
locks are held in open path.

Signed-off-by: Jiri Slaby 
Cc: Alan Cox 
Cc: Aristeu Rozanski 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

device create: char: convert device_create to device_create_drvdata

2008-07-22T04:54:41+00:00

device_create() is race-prone, so use the race-free
device_create_drvdata() instead as device_create() is going away.

Signed-off-by: Greg Kroah-Hartman

vt: fix vc_resize locking

2008-06-06T18:29:12+00:00

Lockdep says we can't take tasklist lock or sighand lock inside ctrl_lock.

Signed-off-by: Nick Piggin 
Acked-by: Alan Cox 
Cc: Oleg Nesterov 
Cc: "Eric W. Biederman" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vt: fix background color on line feed, DEC invert

2008-06-06T18:29:12+00:00

Original report: """I used to force my console to black-on-white by the
command `setterm -inversescreen on`.  In 2.6.26-rc4, I get lots of black
background characters."""

Another addendum to commit c9e587ab.  This was previously missed out since
I was not aware of what vc_decscnm was for.

Signed-off-by: Jan Engelhardt 
Reported-by: 
Tested-by: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds