media: cec: use us_to_ktime() where appropriate

[Why]
There are several ns_to_ktime() calls that require using nanoseconds. It is
better to replace them with us_to_ktime() to make code clear, gettin

media: cec: use us_to_ktime() where appropriate

[Why]
There are several ns_to_ktime() calls that require using nanoseconds. It is
better to replace them with us_to_ktime() to make code clear, getting rid
of multiplication by 1000.

Also the timer function code may have an integer wrap-around issue. Since
both tx_custom_low_usecs and tx_custom_high_usecs can be set to up to
9999999 from the user space via cec_pin_error_inj_parse_line(), this may
cause usecs to be overflowed when adap->monitor_pin_cnt is zero and usecs
is multiplied by 1000.

[How]
Take advantage of using an appropriate helper func us_to_ktime() instead of
ns_to_ktime() to improve readability and to make the code clearer. And this
also mitigates possible integer wrap-arounds when usecs value is too large
and it is multiplied by 1000.

Found by Linux Verification Center (linuxtesting.org) with Svace.

Signed-off-by: Vitaliy Shevtsov <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>

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media: cec: core: allow raw msg transmit while configuring

While the CEC adapter is configuring, it is not possible to transmit a
CEC message with the CEC_MSG_FL_RAW flag set as this is blocked at t

media: cec: core: allow raw msg transmit while configuring

While the CEC adapter is configuring, it is not possible to transmit a
CEC message with the CEC_MSG_FL_RAW flag set as this is blocked at the
ioctl level. Check if this flag is set, and if so, allow the message to
be transmitted. This is useful for debugging if the display has no
physical address (typically because the HPD is pulled low while in
Standby).

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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