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    SubjectRe: Console fixes for 2.1.108 (fwd)

    With your new patch I get the following compile error:

    es -O2 -fomit-frame-pointer -pipe -fno-strength-reduce -m486
    -malign-loops=2 -malign-jumps=2 -malign-functions=2 -DCPU=686
    -DEXPORT_SYMTAB -c console.c
    console.c:2165: conflicting types for `con_init'
    /usr/src/l-other/linux-2.1.108/include/linux/tty.h:317: previous
    declaration of `con_init'
    console.c: In function `con_init':
    console.c:2259: warning: `return' with a value, in function returning void
    make[3]: *** [console.o] Error 1
    make[3]: Leaving directory `/usr/src/l-other/linux-2.1.108/drivers/char'
    make[2]: *** [first_rule] Error 2
    make[2]: Leaving directory `/usr/src/l-other/linux-2.1.108/drivers/char'
    make[1]: *** [sub_dirs] Error 2
    make[1]: Leaving directory `/usr/src/l-other/linux-2.1.108/drivers'
    make: *** [linuxsubdirs] Error 2

    # Console drivers
    # CONFIG_VGA_CONSOLE is not set
    # CONFIG_FB_MDA is not set
    # CONFIG_FB_VIRTUAL is not set
    # CONFIG_FBCON_ADVANCED is not set

    On Fri, 10 Jul 1998, Geert Uytterhoeven wrote:

    > I just submitted the latest version of the console fix to JitterBug. The patch
    > is relative to 2.1.108 and can be downloaded from:
    > - Changes by me:
    > o Frame buffer devices are now initialized from chr_dev_init(), i.e.
    > after the PCI and memory subsystems. Early console messages are handled
    > by vgacon (VGA text console), or by a very small dummy driver if vgacon
    > is not available.
    > When the first frame buffer device is initialized (can be builtin or a
    > loadable module), it takes over the console. The old screen contents
    > are not lost.
    > o Added scrollback for frame buffer devices that support wrapping or
    > panning
    > o Low level frame buffer renderers can be loadable modules again
    > o vgafb (VGA text frame buffer device) can be a loadable module
    > o Fix the default color palette (incorrectly assumed to be a typo)
    > o Make sure vfb (virtual frame buffer device) is initialized last
    > o Doc fixes (contents and typos)
    > o drivers/video/ depends on CONFIG_VT
    > o Vesafb cannot be enabled together with vgacon
    > o Get rid of the ugly text logos
    > - Changes by Jakub Jelinek:
    > o SBUS or UPA based frame buffer devices
    > o SPARC Creator/Creator3D frame buffer device
    > o Optimizations and clean ups in the character rendering code
    > o Smart redraw scrolling
    > o Sun 8x16 font
    > - Changes by Andrew Apted:
    > o Prevent flickering when scrolling in vgafb/mdafb
    > o Fix weird color palette changes in vgafb
    > o Auxiliary types for text frame buffers
    > o MDA cursor fixes
    > - Changes by Philip Blundell:
    > o Small fixes for ARM
    > - Changes by Bill Hawes:
    > o Selection bug fixes
    > - Changes by Russell King:
    > o Frame buffer cursor fixes
    > - Changes by Martin Mares:
    > o vgacon supports scrollback
    > o vgacon uses fast hardware scrolling when available
    > o vgacon supports changeable fonts and console resizing
    > o Generic console code again allows character buffer of the foreground
    > console to be contained directly in video ram. Added few hooks for
    > such consoles:
    > con_set_origin - Calculate start of screen buffer for
    > foreground console
    > con_vram_scroll - Try scrolling the whole screen buffer
    > con_save_screen - Save screen contents to real screen buffer
    > o con_switch now returns whether to redraw or not
    > o vgacon: Original bootup screen retained when starting the console.
    > o Better coalescing of multiple characters to single putcs
    > o Did some shuffling of subroutines to make the code more readable.
    > o Added back the no-scroll command-line option.
    > o Clipping (aka selection) from scroll-back works
    > o Changed configuration on all architectures -- all console settings
    > now reside within single sub-menu.
    > o Moved declarations of console subsystem routines to vt_kern.h
    > o Coalesced both version of vc_resize into one.
    > o Cleaned up font switching.
    > o Killed con_adjust_height
    > o Cleaned up allocation of new consoles
    > o Include logo on i386 only with CONFIG_FB as the text mode logo
    > is very ugly.
    > o When only the vgacon is configured, omit lots of screen refreshing
    > code.
    > o VGA videomem access is now arch-dependent and whereever possible,
    > it's compiled just as direct memory access with necessary address
    > shifting.
    > o Moved all screen buffer access functions to <linux/vt_buffer.h>
    > o memsetw and memcpyw renamed to scr_memsetw and scr_memcpyw to match
    > rest of buffer access functions. Implemented scr_memcpyw as memcpy
    > whereever possible.
    > o Updated fbcon and compatcon to use the new consw hooks.
    > o Removed txtcon as it isn't used anywhere and it's out of date.
    > - Spelling fixes by Trevor Johnson
    > - Some changes I forgot to mention...
    > Greetings,
    > Geert
    > --
    > Geert Uytterhoeven
    > Wavelets, Linux/{m68k~Amiga,PPC~CHRP}
    > Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium
    > -
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