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authorLinus Torvalds <torvalds@linux-foundation.org>2020-09-09 14:53:50 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-09-17 13:47:54 +0200
commit087b6cb17df5834d395ab72da3f937380470ba15 (patch)
treedb82109ff7143a6472c930648c690915759292ff /arch/powerpc
parent0d123a8c64fde433a9ba07390afb6f2b0d0f5dd0 (diff)
vgacon: remove software scrollback support
commit 973c096f6a85e5b5f2a295126ba6928d9a6afd45 upstream. Yunhai Zhang recently fixed a VGA software scrollback bug in commit ebfdfeeae8c0 ("vgacon: Fix for missing check in scrollback handling"), but that then made people look more closely at some of this code, and there were more problems on the vgacon side, but also the fbcon software scrollback. We don't really have anybody who maintains this code - probably because nobody actually _uses_ it any more. Sure, people still use both VGA and the framebuffer consoles, but they are no longer the main user interfaces to the kernel, and haven't been for decades, so these kinds of extra features end up bitrotting and not really being used. So rather than try to maintain a likely unused set of code, I'll just aggressively remove it, and see if anybody even notices. Maybe there are people who haven't jumped on the whole GUI badnwagon yet, and think it's just a fad. And maybe those people use the scrollback code. If that turns out to be the case, we can resurrect this again, once we've found the sucker^Wmaintainer for it who actually uses it. Reported-by: NopNop Nop <nopitydays@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Cc: 张云海 <zhangyunhai@nsfocus.com> Acked-by: Andy Lutomirski <luto@amacapital.net> Acked-by: Willy Tarreau <w@1wt.eu> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/configs/pasemi_defconfig1
-rw-r--r--arch/powerpc/configs/ppc6xx_defconfig1
2 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/configs/pasemi_defconfig b/arch/powerpc/configs/pasemi_defconfig
index 08b7f4cef243..ddf5e97877e2 100644
--- a/arch/powerpc/configs/pasemi_defconfig
+++ b/arch/powerpc/configs/pasemi_defconfig
@@ -109,7 +109,6 @@ CONFIG_FB_NVIDIA=y
CONFIG_FB_NVIDIA_I2C=y
CONFIG_FB_RADEON=y
# CONFIG_LCD_CLASS_DEVICE is not set
-CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_LOGO=y
CONFIG_SOUND=y
CONFIG_SND=y
diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
index 1372a1a7517a..682d68f39c2b 100644
--- a/arch/powerpc/configs/ppc6xx_defconfig
+++ b/arch/powerpc/configs/ppc6xx_defconfig
@@ -777,7 +777,6 @@ CONFIG_FB_TRIDENT=m
CONFIG_FB_SM501=m
CONFIG_FB_IBM_GXT4500=y
CONFIG_LCD_PLATFORM=m
-CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
CONFIG_LOGO=y