V4L/DVB (11877): lgdt3305: fix 64bit division in function lgdt3305_set_if
Signed-off-by: Michael Krufky <kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/frontends/lgdt3305.c b/drivers/media/dvb/frontends/lgdt3305.c
index d92d055..fde8c59 100644
--- a/drivers/media/dvb/frontends/lgdt3305.c
+++ b/drivers/media/dvb/frontends/lgdt3305.c
@@ -19,6 +19,7 @@
*
*/
+#include <asm/div64.h>
#include <linux/dvb/frontend.h>
#include "dvb_math.h"
#include "lgdt3305.h"
@@ -496,27 +497,15 @@
nco = if_freq_khz / 10;
-#define LGDT3305_64BIT_DIVISION_ENABLED 0
- /* FIXME: 64bit division disabled to avoid linking error:
- * WARNING: "__udivdi3" [lgdt3305.ko] undefined!
- */
switch (param->u.vsb.modulation) {
case VSB_8:
-#if LGDT3305_64BIT_DIVISION_ENABLED
nco <<= 24;
- nco /= 625;
-#else
- nco *= ((1 << 24) / 625);
-#endif
+ do_div(nco, 625);
break;
case QAM_64:
case QAM_256:
-#if LGDT3305_64BIT_DIVISION_ENABLED
nco <<= 28;
- nco /= 625;
-#else
- nco *= ((1 << 28) / 625);
-#endif
+ do_div(nco, 625);
break;
default:
return -EINVAL;