From 8bb185263972b24fb592a709bb08a8df235fd9a2 Mon Sep 17 00:00:00 2001 From: Miaoqian Lin Date: Tue, 26 Jul 2022 17:39:22 +0800 Subject: [PATCH] drm/vc4: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage stable inclusion from stable-v5.10.113 commit 0a2cef65b32919af7df4df979c5eede5f7825f17 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5ISAH Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0a2cef65b32919af7df4df979c5eede5f7825f17 -------------------------------- [ Upstream commit 3d0b93d92a2790337aa9d18cb332d02356a24126 ] If the device is already in a runtime PM enabled state pm_runtime_get_sync() will return 1. Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync() fails, so use pm_runtime_resume_and_get() instead. this function will handle this. Fixes: 4078f5757144 ("drm/vc4: Add DSI driver") Signed-off-by: Miaoqian Lin Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20220420135008.2757-1-linmq006@gmail.com Signed-off-by: Sasha Levin Signed-off-by: Zheng Zengkai Acked-by: Xie XiuQi --- drivers/gpu/drm/vc4/vc4_dsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index eaf276978ee7..ad84b56f4091 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -835,7 +835,7 @@ static void vc4_dsi_encoder_enable(struct drm_encoder *encoder) unsigned long phy_clock; int ret; - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret) { DRM_ERROR("Failed to runtime PM enable on DSI%d\n", dsi->port); return; -- GitLab