linux-kernel - [PATCH] drm/msm/dp: add drm debug logs to dp_pm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1628546337-15517-1-git-send-email-khsieh@codeaurora.org>
Date:   Mon,  9 Aug 2021 14:58:57 -0700
From:   Kuogee Hsieh <khsieh@...eaurora.org>
To:     robdclark@...il.com, sean@...rly.run, swboyd@...omium.org,
        vkoul@...nel.org, agross@...nel.org, bjorn.andersson@...aro.org
Cc:     abhinavk@...eaurora.org, aravindh@...eaurora.org,
        khsieh@...eaurora.org, freedreno@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/msm/dp: add drm debug logs to dp_pm_resume/suspend

Add drm debug logs to dp_pm_resume and dp_pm_suspend to help
debug suspend/resume issues.

Fixes: 355ab7428f09 ("drm/msm/dp: add debug logs to dp_pm_resume/suspend")
Signed-off-by: Kuogee Hsieh <khsieh@...eaurora.org>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 8a85613..870b926 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1284,6 +1284,9 @@ static int dp_pm_resume(struct device *dev)
 
 	mutex_lock(&dp->event_mutex);
 
+	DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
+			dp->core_initialized, dp_display->power_on);
+
 	/* start from disconnected state */
 	dp->hpd_state = ST_DISCONNECTED;
 
@@ -1315,6 +1318,10 @@ static int dp_pm_resume(struct device *dev)
 	else
 		dp->dp_display.is_connected = false;
 
+	DRM_DEBUG_DP("After, sink_count=%d is_connected=%d core_inited=%d power_on=%d\n",
+			dp->link->sink_count, dp->dp_display.is_connected,
+			dp->core_initialized, dp_display->power_on);
+
 	mutex_unlock(&dp->event_mutex);
 
 	return 0;
@@ -1330,6 +1337,9 @@ static int dp_pm_suspend(struct device *dev)
 
 	mutex_lock(&dp->event_mutex);
 
+	DRM_DEBUG_DP("Before, core_inited=%d power_on=%d\n",
+			dp->core_initialized, dp_display->power_on);
+
 	if (dp->core_initialized == true) {
 		/* mainlink enabled */
 		if (dp_power_clk_status(dp->power, DP_CTRL_PM))
@@ -1343,6 +1353,9 @@ static int dp_pm_suspend(struct device *dev)
 	/* host_init will be called at pm_resume */
 	dp->core_initialized = false;
 
+	DRM_DEBUG_DP("After, core_inited=%d power_on=%d\n",
+			dp->core_initialized, dp_display->power_on);
+
 	mutex_unlock(&dp->event_mutex);
 
 	return 0;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project