linux-kernel - [PATCH 3.12 134/212] drm/radeon: activate UVD clocks before sending the destroy msg

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Message-Id: <20131202191301.927229253@linuxfoundation.org>
Date:	Mon,  2 Dec 2013 11:15:25 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Christian König <christian.koenig@....com>,
	Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 3.12 134/212] drm/radeon: activate UVD clocks before sending the destroy msg

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

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

From: Christian König <christian.koenig@....com>

commit c154a76311293f9671439286834aa325b7ef59fe upstream.

Make sure the UVD clocks are still active before sending
the destroy message, otherwise the hw might hang.

Signed-off-by: Christian König <christian.koenig@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/radeon/radeon_uvd.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/radeon/radeon_uvd.c
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -240,6 +240,8 @@ void radeon_uvd_free_handles(struct rade
 		if (handle != 0 && rdev->uvd.filp[i] == filp) {
 			struct radeon_fence *fence;
 
+			radeon_uvd_note_usage(rdev);
+
 			r = radeon_uvd_get_destroy_msg(rdev,
 				R600_RING_TYPE_UVD_INDEX, handle, &fence);
 			if (r) {


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