On 5/14/20 10:21 PM, Geert Uytterhoeven wrote:
These #ifdefs are relics from APUS (Amiga Power-Up System), which
added a PPC board. APUS support was killed off a long time ago,
when arch/ppc/ was still king, but these #ifdefs were missed, because
they didn't test for CONFIG_APUS.
Add FIXME about using the C code variants (APUS ones) in the future.
Reported-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
---
v2:
- added FIXME comment instead of removing the C code variants
drivers/video/fbdev/amifb.c | 6 ++++++
1 file changed, 6 insertions(+)
Index: b/drivers/video/fbdev/amifb.c
===================================================================
--- a/drivers/video/fbdev/amifb.c
+++ b/drivers/video/fbdev/amifb.c
@@ -575,6 +575,12 @@ static u_short maxfmode, chipset;
#define downx(x, v) ((v) & -(x))
#define modx(x, v) ((v) & ((x) - 1))
+/*
+ * FIXME: Use C variants of the code marked with #ifdef __mc68000__
+ * in the driver. It shouldn't negatively affect the performance and
+ * is required for APUS support (once it is re-added to the kernel).
+ * Needs to be tested on the hardware though..
+ */
/* if x1 is not a constant, this macro won't make real sense :-) */
#ifdef __mc68000__
#define DIVUL(x1, x2) ({int res; asm("divul %1,%2,%3": "=d" (res): \
