linux_dsm_epyc7002/drivers/video/console
Ian Armstrong 2ddce3fd0a fbcon: only unbind from console if successfully registered
Attempting to unload a framebuffer module calls unregister_framebuffer()
which in turn gets fbcon to release it.  If fbcon has no framebuffers
linked to a console, it will also unbind itself from the console driver.
However, if fbcon never registered itself as a console driver, the unbind
will fail causing the framebuffer device entry to persist.  In most cases
this failure will result in an oops when attempting to access the now
non-existent device.

This patch ensures that the fbcon unbind request will succeed even if a
bind was never done.  It tracks if a successful bind ever occurred & will
only attempt to unbind if needed.  If there never was a bind, it simply
returns with no error.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 07:39:57 -07:00
..
bitblit.c video: console, use DIV_ROUND_UP 2009-09-23 07:39:56 -07:00
dummycon.c Remove magic macros for screen_info structure members 2007-10-16 22:57:17 -07:00
fbcon_ccw.c fbcon: fix color generation for monochrome framebuffer 2008-02-06 10:41:18 -08:00
fbcon_cw.c fbcon: fix color generation for monochrome framebuffer 2008-02-06 10:41:18 -08:00
fbcon_rotate.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fbcon_rotate.h fbcon: fix rotate upside down crash 2009-08-07 10:39:55 -07:00
fbcon_ud.c fbcon: fix color generation for monochrome framebuffer 2008-02-06 10:41:18 -08:00
fbcon.c fbcon: only unbind from console if successfully registered 2009-09-23 07:39:57 -07:00
fbcon.h fbcon: fix monochrome color value calculation 2008-10-02 15:53:13 -07:00
font_6x11.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_7x14.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_8x8.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_8x16.c export font_vga_8x16 2007-10-16 09:43:19 -07:00
font_10x18.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_acorn_8x8.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_mini_4x6.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_pearl_8x8.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_sun8x16.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
font_sun12x22.c fbcon: Convert struct font_desc to use ISO C initializers 2007-10-16 09:43:17 -07:00
fonts.c cleanup after APUS removal 2008-02-06 10:41:01 -08:00
Kconfig sparc: Kill PROM console driver. 2009-09-15 17:04:38 -07:00
Makefile sparc: Kill PROM console driver. 2009-09-15 17:04:38 -07:00
mdacon.c Revert "vt: fix background color on line feed" 2008-10-14 12:12:02 -07:00
newport_con.c drivers/video/console/newport_con.c: fix read outside array bounds 2009-09-23 07:39:56 -07:00
softcursor.c fbdev: change asm/uaccess.h to linux/uaccess.h 2007-10-16 09:43:17 -07:00
sticon.c Revert "vt: fix background color on line feed" 2008-10-14 12:12:02 -07:00
sticore.c parisc: sticore.c - check return values 2009-08-02 15:26:51 +02:00
tileblit.c fbcon: fix color generation for monochrome framebuffer 2008-02-06 10:41:18 -08:00
vgacon.c includecheck fix: drivers/video, vgacon.c 2009-09-20 16:01:58 +05:30