1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
From 60ed238e2225599540e47a95ecf50313cca9459e Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Tue, 29 Jun 2021 11:36:38 +0200
Subject: [PATCH] drm/vc4: hdmi: Put the device on error in
pre_crtc_configure
In the vc4_hdmi_encoder_pre_crtc_configure() function error path we
never actually call pm_runtime_put() even though
pm_runtime_resume_and_get() is our very first call.
Fixes: 4f6e3d66ac52 ("drm/vc4: Add runtime PM support to the HDMI encoder driver")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -904,6 +904,7 @@ static void vc4_hdmi_encoder_pre_crtc_co
ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
if (ret < 0) {
DRM_ERROR("Failed to retain power domain: %d\n", ret);
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
return;
}
@@ -911,12 +912,14 @@ static void vc4_hdmi_encoder_pre_crtc_co
ret = clk_set_rate(vc4_hdmi->pixel_clock, pixel_rate);
if (ret) {
DRM_ERROR("Failed to set pixel clock rate: %d\n", ret);
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
return;
}
ret = clk_prepare_enable(vc4_hdmi->pixel_clock);
if (ret) {
DRM_ERROR("Failed to turn on pixel clock: %d\n", ret);
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
return;
}
@@ -924,6 +927,7 @@ static void vc4_hdmi_encoder_pre_crtc_co
vc4_hdmi->hsm_req = clk_request_start(vc4_hdmi->hsm_clock, hsm_rate);
if (IS_ERR(vc4_hdmi->hsm_req)) {
DRM_ERROR("Failed to set HSM clock rate: %ld\n", PTR_ERR(vc4_hdmi->hsm_req));
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
return;
}
@@ -945,6 +949,7 @@ static void vc4_hdmi_encoder_pre_crtc_co
clk_request_done(vc4_hdmi->hsm_req);
clk_disable_unprepare(vc4_hdmi->hsm_clock);
clk_disable_unprepare(vc4_hdmi->pixel_clock);
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
return;
}
@@ -956,6 +961,7 @@ static void vc4_hdmi_encoder_pre_crtc_co
clk_request_done(vc4_hdmi->hsm_req);
clk_disable_unprepare(vc4_hdmi->hsm_clock);
clk_disable_unprepare(vc4_hdmi->pixel_clock);
+ pm_runtime_put(&vc4_hdmi->pdev->dev);
return;
}
|
