diff options
| author | Dave Airlie <airlied@redhat.com> | 2015-01-29 14:11:25 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-02 10:09:54 -0800 |
| commit | 67dc0d4758e5ced978bb30e8af11bc42cabfa77c (patch) | |
| tree | 582238896448adb99c94b90380bd49ec21dedc69 | |
| parent | 61b6b7fbda1bcef6d3df6b789e6bb178ee83d3d8 (diff) | |
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>
| -rw-r--r-- | include/linux/vt_buffer.h | 4 |
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 |