Noticed on a DEC Alpha.
Start up into console mode caused 15 unaligned accesses, and starting X
caused another 48.
Signed-off-by: Matt Turner <matts...@gmail.com>
CC: Jerome Glisse <jgli...@redhat.com>
CC: Alex Deucher <alexdeuc...@gmail.com>
CC: Dave Airlie <airl...@redhat.com>
---
drivers/gpu/drm/radeon/atom.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index bd0c843..c1d3c24 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/sched.h>
+#include <asm/unaligned.h>
#define ATOM_DEBUG
@@ -212,7 +213,9 @@ static uint32_t atom_get_src_int(atom_exec_context *ctx,
uint8_t attr,
case ATOM_ARG_PS:
idx = U8(*ptr);
(*ptr)++;
- val = le32_to_cpu(ctx->ps[idx]);
+ /* get_unaligned avoids unaligned accesses from atombios tables
+ * 21, 24, 42. */
+ val = le32_to_cpu(get_unaligned((u32 *)&ctx->ps[idx]));
if (print)
DEBUG("PS[0x%02X,0x%04X]", idx, val);
break;
--
1.6.5.3
------------------------------------------------------------------------------
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