linux-kernel - [PATCH AUTOSEL for 4.9 50/52] drm/amd/amdgpu: fix console deadlock if late init failed

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Message-ID: <20171129172100.28819-50-alexander.levin@verizon.com>
Date:   Wed, 29 Nov 2017 17:21:24 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Jim Qu <Jim.Qu@....com>, Alex Deucher <alexander.deucher@....com>,
        alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 4.9 50/52] drm/amd/amdgpu: fix console deadlock if
 late init failed

From: Jim Qu <Jim.Qu@....com>

[ Upstream commit c085bd5119d5d0bdf3ef591a5563566be7dedced ]

Signed-off-by: Jim Qu <Jim.Qu@....com>
Reviewed-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index e41d4baebf86..ce9797b6f9c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2020,8 +2020,11 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
 	}
 
 	r = amdgpu_late_init(adev);
-	if (r)
+	if (r) {
+		if (fbcon)
+			console_unlock();
 		return r;
+	}
 
 	/* pin cursors */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-- 
2.11.0