linux.git/drivers/tty/vt/vt.c, branch v3.19

tty: pr_warning->pr_warn and logging neatening

2014-11-26T01:06:38+00:00

Convert the pr_warning to the more common pr_warn.

Other miscellanea:

o Convert unusual PR_FMT define and uses to pr_fmt
o Remove unnecessary OOM message
o Fix grammar in an error message
o Convert a pr_warning with a KERN_ERR to pr_err

Signed-off-by: Joe Perches 
Signed-off-by: Greg Kroah-Hartman

vt: Fix build breakage when !CONFIG_VT_CONSOLE

2014-11-22T15:48:51+00:00

Commit 68952076e9226cc23ebce66d3fc2fdb8b6c04c30 ("vt: Remove
vt_get_kmsg_redirect() from uapi header") fails to compile if
!CONFIG_VT_CONSOLE.

Move macro definition for vt_get_kmsg_redirect() up with file-scope
function declarations.

Reported-by: Jim Davis 
Signed-off-by: Peter Hurley 
Signed-off-by: Greg Kroah-Hartman

tty:vt remove obsolete struct initializer

2014-11-06T04:22:47+00:00

This patch fixes sparse warning:
"obsolete struct initializer, use C99 syntax"

Signed-off-by: Peng Fan 
Signed-off-by: Greg Kroah-Hartman

vt: Remove vt_get_kmsg_redirect() from uapi header

2014-11-06T04:18:30+00:00

vt_get_kmsg_redirect() only has meaning to the console driver as
an alias for calling vt_kmsg_redirect(). Move the macro definition
to the only source file which uses it; remove from uapi/linux/vt.h

Signed-off-by: Peter Hurley 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel into drm-next

2014-06-19T00:54:35+00:00

First round of fixes for 3.16-rc, mostly cc: stable, and the vt/vgacon
fixes from Daniel [1] to avoid hangs and unclaimed register errors on
module load/reload.

* tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel:
  drm/i915/bdw: remove erroneous chv specific workarounds from bdw code
  drm/i915: fix possible refcount leak when resetting forcewake
  drm/i915: Reorder semaphore deadlock check
  drm/i95: Initialize active ring->pid to -1
  drm/i915: set backlight duty cycle after backlight enable for gen4
  drm/i915: Avoid div-by-zero when pixel_multiplier is zero
  drm/i915: Disable FBC by default also on Haswell and later
  drm/i915: Kick out vga console
  drm/i915: Fixup global gtt cleanup
  vt: Don't ignore unbind errors in vt_unbind
  vt: Fix up unregistration of vt drivers
  vt: Fix replacement console check when unbinding

vt: Don't ignore unbind errors in vt_unbind

2014-06-06T20:19:47+00:00

Otherwise the loop will never stop since we don't make any
forward progress. Noticed while breaking this accidentally
in a painful attempt to make vga_con unregistering work.

With this patch we'll bail out on the first attempt, which
at least leaves a useful enough system behind for debugging.
Livelocks on console_lock just aren't fun.

Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Reviewed-by: David Herrmann 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Daniel Vetter

vt: Fix up unregistration of vt drivers

2014-06-06T20:19:32+00:00

A bunch of issues:
- We should not kick out the default console (which is tracked in
  conswitchp), so check for that.
- Add better error codes so callers can differentiate between "something
  went wrong" and "your driver isn't registered already". i915 needs
  that so it doesn't fall over when reloading the driver and hence
  vga_con is already unregistered.
- There's a mess with the driver flags: What we need to check for is
  that the driver isn't used any more, i.e. unbound completely (FLAG_INIT).
  And not whether it's the boot console or not (which is the only one
  which doesn't have FLAG_MODULE). Otherwise there's no way to kick
  out the boot console, which i915 wants to do to prevent havoc with
  vga_con interferring (which tends to hang machines).

Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Reviewed-by: David Herrmann 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Daniel Vetter

vt: Fix replacement console check when unbinding

2014-06-06T20:18:25+00:00

I don't fully understand the magic of the vt register/unregister
logic, but apparently everything but the inital console (as set
in the conswitchp pointer) is marked with FLAG_MODULE. Which means
if something unregistered the boot vt driver (e.g. i915.ko kicking
out vga_con) there's nothing left when trying to unbind e.g. fbcon
through sysfs.

But in most cases have the dummy console hanging around besides the
boot console, so this test is fairly dubious. What we actually want is
simply a different console than the one we want to unbind.

v2: Correct the commit message to clarify that the dummy console isn't
always around, but only in most cases (David).

Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: David Herrmann 
Reviewed-by: David Herrmann 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Daniel Vetter

console: Use explicit pointer type for vc_uni_pagedir* fields

2014-05-28T20:37:21+00:00

The vc_data.vc_uni_pagedir filed is currently long int, supposedly to
be served generically.  This, however, leads to lots of cast to
pointer, and rather it worsens the readability significantly.

Actually, we have now only a single uni_pagedir map implementation,
and this won't change likely.  So, it'd be much more simple and
error-prone to just use the exact pointer for struct uni_pagedir
instead of long.

Ditto for vc_uni_pagedir_loc.  It's a pointer to the uni_pagedir, thus
it can be changed similarly to the exact type.

Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

vt: emulate 8- and 24-bit colour codes.

2014-05-28T20:14:08+00:00

Most other mainstream terminals support "xterm256" colours, which means
people sometimes use these blindly without checking capabilities.

Because of hardware limitations of VGA consoles, colours are downgraded to
16 foregrounds and 8 backgrounds.  On fbdev consoles it would be possible
to support them without quality loss, but adding that would require quite a
large amount of code.

Signed-off-by: Adam Borowski 
Signed-off-by: Greg Kroah-Hartman