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drm/vmwgfx: Filter out modes those cannot be supported by the current VRAM size.

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When screen objects are enabled, the bpp is assumed to be 32, otherwise
it is set to 16.

v2:
* Use u32 instead of u64 for assumed_bpp.
* Fixed mechanism to check for screen objects
* Limit the back buffer size to VRAM.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Cc: <stable@vger.kernel.org>
This commit is contained in:
Sinclair Yeh
2014-10-31 09:58:06 +01:00
committed by Thomas Hellstrom
parent 0468ab5b79
commit 9a72384d86
2 changed files with 18 additions and 4 deletions
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6
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
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@@ -688,7 +688,11 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
goto out_err0;
}
if (unlikely(dev_priv->prim_bb_mem < dev_priv->vram_size))
/*
* Limit back buffer size to VRAM size. Remove this once
* screen targets are implemented.
*/
if (dev_priv->prim_bb_mem > dev_priv->vram_size)
dev_priv->prim_bb_mem = dev_priv->vram_size;
mutex_unlock(&dev_priv->hw_mutex);