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https://github.com/samueldr/wip-pinebook-pro.git
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51 lines
1.4 KiB
Diff
51 lines
1.4 KiB
Diff
From 84517c6e2aac4fb32c8b02b5713297b37c140b4f Mon Sep 17 00:00:00 2001
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From: Samuel Dionne-Riel <samuel@dionne-riel.com>
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Date: Sun, 26 Jul 2020 19:31:59 -0400
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Subject: [PATCH] [HACK] Revert "pwm: Read initial hardware state at request
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time"
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This is a WORKAROUND for the issue where recent kernels will hang at
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display initialization with recent kernels.
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This reverts commit cfc4c189bc70b1acc17e6f1abf1dc1c0ae890bd8.
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---
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drivers/pwm/core.c | 16 ++++++++--------
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1 file changed, 8 insertions(+), 8 deletions(-)
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diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
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index 004b2ea9b5fd..245e2fcfc779 100644
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--- a/drivers/pwm/core.c
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+++ b/drivers/pwm/core.c
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@@ -117,14 +117,6 @@ static int pwm_device_request(struct pwm_device *pwm, const char *label)
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}
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}
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- if (pwm->chip->ops->get_state) {
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- pwm->chip->ops->get_state(pwm->chip, pwm, &pwm->state);
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- trace_pwm_get(pwm, &pwm->state);
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-
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- if (IS_ENABLED(CONFIG_PWM_DEBUG))
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- pwm->last = pwm->state;
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- }
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-
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set_bit(PWMF_REQUESTED, &pwm->flags);
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pwm->label = label;
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@@ -305,6 +297,14 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip,
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pwm->hwpwm = i;
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pwm->state.polarity = polarity;
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+ if (pwm->chip->ops->get_state) {
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+ pwm->chip->ops->get_state(pwm->chip, pwm, &pwm->state);
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+ trace_pwm_get(pwm, &pwm->state);
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+
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+ if (IS_ENABLED(CONFIG_PWM_DEBUG))
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+ pwm->last = pwm->state;
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+ }
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+
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radix_tree_insert(&pwm_tree, pwm->pwm, pwm);
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}
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--
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2.25.4
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