[2/3] drm/vmwgfx: Remove the restrict_dma_mask module parameter

Commit Message

Thomas Hellström (Intel) Nov. 14, 2019, 10:56 a.m. UTC

From: Thomas Hellstrom <[e-mail]>

The restrict_dma_mask was mainly used for iommu functionality debugging
and has no use anymore. Remove it.

Signed-off-by: Thomas Hellstrom <[e-mail]>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Patch

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 60ef03120917..8d479a411cdd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -255,7 +255,6 @@  static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
 static int vmw_force_iommu;
 static int vmw_restrict_iommu;
 static int vmw_force_coherent;
-static int vmw_restrict_dma_mask;
 static int vmw_assume_16bpp;
 
 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
@@ -270,8 +269,6 @@  MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
 module_param_named(force_coherent, vmw_force_coherent, int, 0600);
-MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
-module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
 MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes");
 module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600);
 
@@ -597,7 +594,7 @@  static int vmw_dma_masks(struct vmw_private *dev_priv)
 	int ret = 0;
 
 	ret = dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(64));
-	if (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask) {
+	if (sizeof(unsigned long) == 4) {
 		DRM_INFO("Restricting DMA addresses to 44 bits.\n");
 		return dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(44));
 	}