This is a note to let you know that I've just added the patch titled
mach64: use unaligned access
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mach64-use-unaligned-access.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c29dd8696dc5dbd50b3ac441b8a26751277ba520 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Date: Thu, 23 Jan 2014 14:41:09 -0500
Subject: mach64: use unaligned access
From: Mikulas Patocka <mpatocka@xxxxxxxxxx>
commit c29dd8696dc5dbd50b3ac441b8a26751277ba520 upstream.
This patch fixes mach64 to use unaligned access to the font bitmap.
This fixes unaligned access warning on sparc64 when 14x8 font is loaded.
On x86(64), unaligned access is handled in hardware, so both functions
le32_to_cpup and get_unaligned_le32 perform the same operation.
On RISC machines, unaligned access is not handled in hardware, so we
better use get_unaligned_le32 to avoid the unaligned trap and warning.
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/video/aty/mach64_accel.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/video/aty/mach64_accel.c
+++ b/drivers/video/aty/mach64_accel.c
@@ -4,6 +4,7 @@
*/
#include <linux/delay.h>
+#include <asm/unaligned.h>
#include <linux/fb.h>
#include <video/mach64.h>
#include "atyfb.h"
@@ -419,7 +420,7 @@ void atyfb_imageblit(struct fb_info *inf
u32 *pbitmap, dwords = (src_bytes + 3) / 4;
for (pbitmap = (u32*)(image->data); dwords; dwords--, pbitmap++) {
wait_for_fifo(1, par);
- aty_st_le32(HOST_DATA0, le32_to_cpup(pbitmap), par);
+ aty_st_le32(HOST_DATA0, get_unaligned_le32(pbitmap), par);
}
}
Patches currently in stable-queue which might be from mpatocka@xxxxxxxxxx are
queue-3.4/matroxfb-restore-the-registers-m_access-and-m_pitch.patch
queue-3.4/framebuffer-fix-cfb_copyarea.patch
queue-3.4/mach64-use-unaligned-access.patch
queue-3.4/mach64-fix-cursor-when-character-width-is-not-a-multiple-of-8-pixels.patch
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