drm/vmwgfx: Replace iowrite/ioread with volatile memory accesses
Now that we use memremap instead of ioremap, Use WRITE_ONCE / READ_ONCE
instead of iowrite / ioread.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index bee0a45..d1c34ab 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -752,14 +752,8 @@
ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
dev_priv->active_master = &dev_priv->fbdev_master;
- /*
- * Force __iomem for this mapping until the implied compiler
- * barriers and {READ|WRITE}_ONCE semantics from the
- * io{read|write}32() accessors can be replaced with explicit
- * barriers.
- */
- dev_priv->mmio_virt = (void __iomem *) memremap(dev_priv->mmio_start,
- dev_priv->mmio_size, MEMREMAP_WB);
+ dev_priv->mmio_virt = memremap(dev_priv->mmio_start,
+ dev_priv->mmio_size, MEMREMAP_WB);
if (unlikely(dev_priv->mmio_virt == NULL)) {
ret = -ENOMEM;
@@ -913,7 +907,7 @@
out_no_device:
ttm_object_device_release(&dev_priv->tdev);
out_err4:
- memunmap((void __force *) dev_priv->mmio_virt);
+ memunmap(dev_priv->mmio_virt);
out_err3:
vmw_ttm_global_release(dev_priv);
out_err0:
@@ -964,7 +958,7 @@
pci_release_regions(dev->pdev);
ttm_object_device_release(&dev_priv->tdev);
- memunmap((void __force *) dev_priv->mmio_virt);
+ memunmap(dev_priv->mmio_virt);
if (dev_priv->ctx.staged_bindings)
vmw_binding_state_free(dev_priv->ctx.staged_bindings);
vmw_ttm_global_release(dev_priv);