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[PATCH 4.6 131/203] drm/amd/powerplay: fix logic error.

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  [PATCH 4.6 131/203] drm/amd/powerplay: fix logic error. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-07-26 00:20 +0200

#1450113 — [PATCH 4.6 131/203] drm/amd/powerplay: fix logic error.

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

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

From: Rex Zhu <Rex.Zhu@amd.com>

commit 1d7b84d12af8312b52316029f1fa0fa4eac3c9e4 upstream.

the error lead powerplay can't get display info in DGPU case.
store_cc6_data just implement in APU.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
@@ -306,10 +306,14 @@ int phm_store_dal_configuration_data(str
 {
 	PHM_FUNC_CHECK(hwmgr);
 
-	if (hwmgr->hwmgr_func->store_cc6_data == NULL)
+	if (display_config == NULL)
 		return -EINVAL;
 
 	hwmgr->display_config = *display_config;
+
+	if (hwmgr->hwmgr_func->store_cc6_data == NULL)
+		return -EINVAL;
+
 	/* to do pass other display configuration in furture */
 
 	if (hwmgr->hwmgr_func->store_cc6_data)

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