[PATCH v2] drm/amdgpu:Limit the resolution for virtual_display

[Emily Deng]

From: "Emily.Deng" <Emily.Deng at amd.com>

Limit the resolution not bigger than 16384, which means
dev->mode_info.num_crtc * common_modes[i].w not bigger than 16384.

v2:
  Refine the code

Signed-off-by: Emily.Deng <Emily.Deng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index 2b16c8faca34..fd2b3a6dfd60 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -319,6 +319,7 @@ dce_virtual_encoder(struct drm_connector *connector)
 static int dce_virtual_get_modes(struct drm_connector *connector)
 {
 	struct drm_device *dev = connector->dev;
+	struct amdgpu_device *adev = dev->dev_private;
 	struct drm_display_mode *mode = NULL;
 	unsigned i;
 	static const struct mode_size {
@@ -350,8 +351,10 @@ static int dce_virtual_get_modes(struct drm_connector *connector)
 	};
 
 	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
-		mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false);
-		drm_mode_probed_add(connector, mode);
+		if (adev->mode_info.num_crtc * common_modes[i].w <= 16384) {
+			mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false);
+			drm_mode_probed_add(connector, mode);
+		}
 	}
 
 	return 0;
-- 
2.25.1