[PATCH 1/8] rtl2832: fix potential integer overflow in rtl2832_set_frontend

[Gustavo A. R. Silva]

Cast dev->pdata->clk to u64 in order to avoid a potential integer
overflow. This variable is being used in a context that expects
an expression of type u64.

Addresses-Coverity-ID: 1271223 ("Unintentional integer overflow")
Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
---
 drivers/media/dvb-frontends/rtl2832.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/dvb-frontends/rtl2832.c 
b/drivers/media/dvb-frontends/rtl2832.c
index 94bf5b7..eefc301 100644
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -498,7 +498,7 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe)
        * RSAMP_RATIO = floor(CrystalFreqHz * 7 * pow(2, 22)
        *       / ConstWithBandwidthMode)
        */
-       num = dev->pdata->clk * 7;
+       num = (u64)dev->pdata->clk * 7;
        num *= 0x400000;
        num = div_u64(num, bw_mode);
        resamp_ratio =  num & 0x3ffffff;
@@ -511,7 +511,7 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe)
        *       / (CrystalFreqHz * 7))
        */
        num = bw_mode << 20;
-       num2 = dev->pdata->clk * 7;
+       num2 = (u64)dev->pdata->clk * 7;
        num = div_u64(num, num2);
        num = -num;
        cfreq_off_ratio = num & 0xfffff;
-- 
2.7.4