[media] tc90522: fix compilation on 32 bits

   drivers/built-in.o: In function `tc90522t_get_frontend':
>> tc90522.c:(.text+0x260b64c): undefined reference to `__divdi3'
>> tc90522.c:(.text+0x260b685): undefined reference to `__divdi3'
>> tc90522.c:(.text+0x260b6bb): undefined reference to `__divdi3'
>> tc90522.c:(.text+0x260b713): undefined reference to `__divdi3'
   drivers/built-in.o:tc90522.c:(.text+0x260bb64): more undefined references to `__divdi3' follow

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/media/dvb-frontends/tc90522.c b/drivers/media/dvb-frontends/tc90522.c
index cdd9808c322c..d9905fb52f84 100644
--- a/drivers/media/dvb-frontends/tc90522.c
+++ b/drivers/media/dvb-frontends/tc90522.c
@@ -28,6 +28,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/math64.h>
 #include <linux/dvb/frontend.h>
 #include "dvb_math.h"
 #include "tc90522.h"
@@ -275,7 +276,7 @@ static int tc90522s_get_frontend(struct dvb_frontend *fe)
                 /* cn = cnr << 3 */
                 p = int_sqrt(cndat << 16);
                 p4 = cndat * cndat;
-                cn = (-16346LL * p4 * p / 10) >> 35;
+                cn = div64_s64(-16346LL * p4 * p, 10) >> 35;
                 cn += (14341LL * p4) >> 21;
                 cn -= (50259LL * cndat * p) >> 23;
                 cn += (88977LL * cndat) >> 9;
@@ -434,13 +435,13 @@ static int tc90522t_get_frontend(struct dvb_frontend *fe)
                 p *= 10;
 
                 cn = 24772;
-                cn += ((43827LL * p) / 10) >> 24;
+                cn += div64_s64(43827LL * p, 10) >> 24;
                 tmp = p >> 8;
-                cn += ((3184LL * tmp * tmp) / 10) >> 32;
+                cn += div64_s64(3184LL * tmp * tmp, 10) >> 32;
                 tmp = p >> 13;
-                cn -= ((128LL * tmp * tmp * tmp) / 10) >> 33;
+                cn -= div64_s64(128LL * tmp * tmp * tmp, 10) >> 33;
                 tmp = p >> 18;
-                cn += ((192LL * tmp * tmp * tmp * tmp) / 1000) >> 24;
+                cn += div64_s64(192LL * tmp * tmp * tmp * tmp, 1000) >> 24;
 
                 stats->stat[0].svalue = cn >> 3;
                 stats->stat[0].scale = FE_SCALE_DECIBEL;