We do not expect the sample_freq to be over 613MHz.
Found by cocci:
drivers/media/dvb-frontends/tda10048.c:345:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_u64 instead.
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
drivers/media/dvb-frontends/tda10048.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/media/dvb-frontends/tda10048.c b/drivers/media/dvb-frontends/tda10048.c
index 3e725cdcc66b..1886f733dbbf 100644
--- a/drivers/media/dvb-frontends/tda10048.c
+++ b/drivers/media/dvb-frontends/tda10048.c
@@ -328,7 +328,8 @@ static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
u32 bw)
{
struct tda10048_state *state = fe->demodulator_priv;
- u64 t, z;
+ u32 z;
+ u64 t;
dprintk(1, "%s()\n", __func__);
@@ -341,6 +342,7 @@ static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
/* t *= 2147483648 on 32bit platforms */
t *= (2048 * 1024);
t *= 1024;
+ /* Sample frequency is under 613MHz */
z = 7 * sample_freq_hz;
do_div(t, z);
t += 5;
--
2.44.0.769.g3c40516874-goog
