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authorDave Airlie <airlied@redhat.com>2015-01-29 14:11:25 +1000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-02-02 10:09:54 -0800
commit67dc0d4758e5ced978bb30e8af11bc42cabfa77c (patch)
tree582238896448adb99c94b90380bd49ec21dedc69 /include/linux/vt_buffer.h
parent61b6b7fbda1bcef6d3df6b789e6bb178ee83d3d8 (diff)
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vt_buffer: drop console buffer copying optimisations
These two copy to/from VGA memory, however on the Silicon Motion SMI750 VGA card on a 64-bit system cause console corruption. This is due to the hw being buggy and not handling a 64-bit transaction correctly. We could try and create a 32-bit version of these routines, but I'm not sure the optimisation is worth much today. Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1132826 Tested-by: Huawei engineering. Signed-off-by: Dave Airlie <airlied@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/vt_buffer.h')
-rw-r--r--include/linux/vt_buffer.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/include/linux/vt_buffer.h b/include/linux/vt_buffer.h
index 057db7d2f448..f38c10ba3ff5 100644
--- a/include/linux/vt_buffer.h
+++ b/include/linux/vt_buffer.h
@@ -21,10 +21,6 @@
#ifndef VT_BUF_HAVE_RW
#define scr_writew(val, addr) (*(addr) = (val))
#define scr_readw(addr) (*(addr))
-#define scr_memcpyw(d, s, c) memcpy(d, s, c)
-#define scr_memmovew(d, s, c) memmove(d, s, c)
-#define VT_BUF_HAVE_MEMCPYW
-#define VT_BUF_HAVE_MEMMOVEW
#endif
#ifndef VT_BUF_HAVE_MEMSETW