Commit a2603d17 authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Mauro Carvalho Chehab

media: i2c: max2175: use 64-bit arithmetic instead of 32-bit

Add suffix LL to constant 2 in order to give the compiler complete
information about the proper arithmetic to use. Notice that this
constant is used in a context that expects an expression of type
s64 (64 bits, signed).

The expression 2 * (clock_rate - abs_nco_freq) is currently being
evaluated using 32-bit arithmetic.

Addresses-Coverity-ID: 1446589 ("Unintentional integer overflow")
Signed-off-by: default avatarGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 91e0c0c1
......@@ -643,7 +643,7 @@ static int max2175_set_nco_freq(struct max2175 *ctx, s32 nco_freq)
if (abs_nco_freq < clock_rate / 2) {
nco_val_desired = 2 * nco_freq;
} else {
nco_val_desired = 2 * (clock_rate - abs_nco_freq);
nco_val_desired = 2LL * (clock_rate - abs_nco_freq);
if (nco_freq < 0)
nco_val_desired = -nco_val_desired;
}
......
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