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led: pwm: don't test if pointer is smaller than zero
of_pwm_request returns either the valid or an error pointer.
Revise the error check to reflect this.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
WIP_next-LS master next v2020.07.0 v2020.06.0 v2020.05.0 v2020.04.0 v2020.03.0
1 parent 1572a1f commit 213192253a4d8599f1d8127a7bdf87b80c767650
@Ahmad Fatoum Ahmad Fatoum authored on 6 Feb 2020
Sascha Hauer committed on 10 Feb 2020
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drivers/led/led-pwm.c