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>

1 files changed, 3 insertions, 14 deletions

diff --git a/drivers/media/dvb/frontends/lgdt3305.c b/drivers/media/dvb/frontends/lgdt3305.c
index d92d0557a80b..fde8c59700fb 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 @@ static int lgdt3305_set_if(struct lgdt3305_state *state,
 
         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;