wip-pinebook-pro/kernel/latest/0001-HACK-Revert-pwm-Read-initial-hardware-state-at-reque.patch

From 84517c6e2aac4fb32c8b02b5713297b37c140b4f Mon Sep 17 00:00:00 2001
From: Samuel Dionne-Riel <samuel@dionne-riel.com>
Date: Sun, 26 Jul 2020 19:31:59 -0400
Subject: [PATCH] [HACK] Revert "pwm: Read initial hardware state at request
 time"

This is a WORKAROUND for the issue where recent kernels will hang at
display initialization with recent kernels.

This reverts commit cfc4c189bc70b1acc17e6f1abf1dc1c0ae890bd8.
---
 drivers/pwm/core.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 004b2ea9b5fd..245e2fcfc779 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -117,14 +117,6 @@ static int pwm_device_request(struct pwm_device *pwm, const char *label)
 		}
 	}
 
-	if (pwm->chip->ops->get_state) {
-		pwm->chip->ops->get_state(pwm->chip, pwm, &pwm->state);
-		trace_pwm_get(pwm, &pwm->state);
-
-		if (IS_ENABLED(CONFIG_PWM_DEBUG))
-			pwm->last = pwm->state;
-	}
-
 	set_bit(PWMF_REQUESTED, &pwm->flags);
 	pwm->label = label;
 
@@ -305,6 +297,14 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip,
 		pwm->hwpwm = i;
 		pwm->state.polarity = polarity;
 
+		if (pwm->chip->ops->get_state) {
+			pwm->chip->ops->get_state(pwm->chip, pwm, &pwm->state);
+			trace_pwm_get(pwm, &pwm->state);
+
+			if (IS_ENABLED(CONFIG_PWM_DEBUG))
+				pwm->last = pwm->state;
+		}
+
 		radix_tree_insert(&pwm_tree, pwm->pwm, pwm);
 	}
 
-- 
2.25.4