linux-kernel - [PATCH 4.4 069/105] drm/amd/amdgpu: fix console deadlock if late init failed

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Message-Id: <20171215092309.479022447@linuxfoundation.org>
Date:   Fri, 15 Dec 2017 10:45:07 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jim Qu <Jim.Qu@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.4 069/105] drm/amd/amdgpu: fix console deadlock if late init failed

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1760,8 +1760,11 @@ int amdgpu_resume_kms(struct drm_device
 	}
 
 	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) {