This change reverse_order() to swab32(bitrev32()), so that
it can have better performance on some platforms.
Signed-off-by: yalin wang <yalin.wang2010@xxxxxxxxx>
---
drivers/video/fbdev/nvidia/nv_accel.c | 4 ++--
drivers/video/fbdev/nvidia/nv_local.h | 13 ++++---------
2 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/drivers/video/fbdev/nvidia/nv_accel.c b/drivers/video/fbdev/nvidia/nv_accel.c
index ad6472a..c21cb34 100644
--- a/drivers/video/fbdev/nvidia/nv_accel.c
+++ b/drivers/video/fbdev/nvidia/nv_accel.c
@@ -382,7 +382,7 @@ static void nvidiafb_mono_color_expand(struct fb_info *info,
for (j = RECT_EXPAND_TWO_COLOR_DATA_MAX_DWORDS; j--;) {
tmp = data[k++];
- reverse_order(&tmp);
+ tmp = reverse_order(tmp);
NVDmaNext(par, tmp);
}
@@ -394,7 +394,7 @@ static void nvidiafb_mono_color_expand(struct fb_info *info,
for (j = dsize; j--;) {
tmp = data[k++];
- reverse_order(&tmp);
+ tmp = reverse_order(tmp);
NVDmaNext(par, tmp);
}
}
diff --git a/drivers/video/fbdev/nvidia/nv_local.h b/drivers/video/fbdev/nvidia/nv_local.h
index 68e508d..a0eb1f3 100644
--- a/drivers/video/fbdev/nvidia/nv_local.h
+++ b/drivers/video/fbdev/nvidia/nv_local.h
@@ -97,18 +97,13 @@
#ifdef __LITTLE_ENDIAN
+#include <linux/swab.h>
#include <linux/bitrev.h>
-#define reverse_order(l) \
-do { \
- u8 *a = (u8 *)(l); \
- a[0] = bitrev8(a[0]); \
- a[1] = bitrev8(a[1]); \
- a[2] = bitrev8(a[2]); \
- a[3] = bitrev8(a[3]); \
-} while(0)
+#define reverse_order(v) swab32(bitrev32(v))
+
#else
-#define reverse_order(l) do { } while(0)
+#define reverse_order(v) (v)
#endif /* __LITTLE_ENDIAN */
#endif /* __NV_LOCAL_H__ */
--
1.9.1
--
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