media: don't do a 31 bit shift on a signed int

On 32-bits archs, a signed integer has 31 bits plus on extra
bit for signal. Due to that, touching the 32th bit with something
like:

	int bar = 1 << 31;

has an undefined behavior in C on 32 bit architectures, as it
touches the signal bit. This is warned by cppcheck.

Instead, force the numbers to be unsigned, in order to solve this
issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/dvb-frontends/cx24123.c b/drivers/media/dvb-frontends/cx24123.c
index ac519c3eff18..3d84ee17e54c 100644
--- a/drivers/media/dvb-frontends/cx24123.c
+++ b/drivers/media/dvb-frontends/cx24123.c
@@ -431,7 +431,7 @@ static u32 cx24123_int_log2(u32 a, u32 b)
 	u32 div = a / b;
 	if (a % b >= b / 2)
 		++div;
-	if (div < (1 << 31)) {
+	if (div < (1UL << 31)) {
 		for (exp = 1; div > exp; nearest++)
 			exp += exp;
 	}