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| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-22 11:16:42 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-26 14:11:10 -0300 |
| commit | 95c520690f5fafb2cda2ec17f8c76ab3422b0174 (patch) | |
| tree | 0dec0f5683f21100b61b19a141512ebe0bac3aea /drivers/media/usb/dvb-usb-v2 | |
| parent | cce8ccca80d8388982133192d0a6d9dc2e8ed712 (diff) | |
| download | linux-95c520690f5fafb2cda2ec17f8c76ab3422b0174.tar.bz2 | |
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>
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/gl861.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/gl861.c b/drivers/media/usb/dvb-usb-v2/gl861.c index b784d9da1a82..c7197e534c02 100644 --- a/drivers/media/usb/dvb-usb-v2/gl861.c +++ b/drivers/media/usb/dvb-usb-v2/gl861.c @@ -353,7 +353,7 @@ static int friio_ext_ctl(struct dvb_usb_device *d, ret += i2c_transfer(&d->i2c_adap, &msg, 1); /* send 32bit(satur, R, G, B) data in serial */ - mask = 1 << 31; + mask = 1UL << 31; for (i = 0; i < 32; i++) { buf[1] = power | FRIIO_CTL_STROBE; if (sat_color & mask) |