"carrier" comes from a get_user() in ir_lirc_ioctl(). We need to test that it's not zero before using it as a divisor. Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> diff --git a/drivers/media/rc/ene_ir.c b/drivers/media/rc/ene_ir.c index 647dd95..d05ac15 100644 --- a/drivers/media/rc/ene_ir.c +++ b/drivers/media/rc/ene_ir.c @@ -881,10 +881,13 @@ static int ene_set_tx_mask(struct rc_dev *rdev, u32 tx_mask) static int ene_set_tx_carrier(struct rc_dev *rdev, u32 carrier) { struct ene_device *dev = rdev->priv; - u32 period = 2000000 / carrier; + u32 period; dbg("TX: attempt to set tx carrier to %d kHz", carrier); + if (carrier == 0) + return -EINVAL; + period = 2000000 / carrier; if (period && (period > ENE_CIRMOD_PRD_MAX || period < ENE_CIRMOD_PRD_MIN)) { diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c index 699eef3..2ea913a 100644 --- a/drivers/media/rc/nuvoton-cir.c +++ b/drivers/media/rc/nuvoton-cir.c @@ -517,6 +517,9 @@ static int nvt_set_tx_carrier(struct rc_dev *dev, u32 carrier) struct nvt_dev *nvt = dev->priv; u16 val; + if (carrier == 0) + return -EINVAL; + nvt_cir_reg_write(nvt, 1, CIR_CP); val = 3000000 / (carrier) - 1; nvt_cir_reg_write(nvt, val & 0xff, CIR_CC); -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html