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| author | Antti Palosaari <crope@iki.fi> | 2014-04-05 20:23:41 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-04-06 14:07:45 (GMT) |
| commit | 82932d4cff46627bc1a693893326400aab5f8967 (patch) | |
| tree | ddeacf20c462d2e998ac8f38fec7f430d446fc27 /drivers/staging | |
| parent | 773bcf8c9ce04c62c513182620efb729c97452fc (diff) | |
| download | linux-82932d4cff46627bc1a693893326400aab5f8967.tar.xz | |
[media] msi001: fix possible integer overflow
Coverity CID 1196502: Unintentional integer overflow
(OVERFLOW_BEFORE_WIDEN)
Potentially overflowing expression "(f_rf + f_if + f_if1) * lo_div"
with type "unsigned int" (32 bits, unsigned) is evaluated using 32-bit
arithmetic before being used in a context which expects an expression
of type "u64" (64 bits, unsigned). To avoid overflow, cast either
operand to "u64" before performing the multiplication.
Reported-by: <scan-admin@coverity.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/media/msi3101/msi001.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/media/msi3101/msi001.c b/drivers/staging/media/msi3101/msi001.c index ac43bae..bd0b93c 100644 --- a/drivers/staging/media/msi3101/msi001.c +++ b/drivers/staging/media/msi3101/msi001.c @@ -201,7 +201,7 @@ static int msi001_set_tuner(struct msi001 *s) dev_dbg(&s->spi->dev, "%s: bandwidth selected=%d\n", __func__, bandwidth_lut[i].freq); - f_vco = (f_rf + f_if + f_if1) * lo_div; + f_vco = (u64) (f_rf + f_if + f_if1) * lo_div; tmp64 = f_vco; m = do_div(tmp64, F_REF * R_REF); n = (unsigned int) tmp64; |