mga_dma: return 'err' not just zero from mga_do_cleanup_dma()
[sfrench/cifs-2.6.git] / drivers / char / drm / mga_dma.c
index 9c73a6e3861b0d18ffb0077ad453519a6369a302..9d95f6078764e2d1a26a0c4b2616fd419fadf80f 100644 (file)
@@ -71,7 +71,7 @@ int mga_do_wait_for_idle(drm_mga_private_t * dev_priv)
        DRM_ERROR("failed!\n");
        DRM_INFO("   status=0x%08x\n", status);
 #endif
-       return DRM_ERR(EBUSY);
+       return -EBUSY;
 }
 
 static int mga_do_dma_reset(drm_mga_private_t * dev_priv)
@@ -256,7 +256,7 @@ static int mga_freelist_init(struct drm_device * dev, drm_mga_private_t * dev_pr
 
        dev_priv->head = drm_alloc(sizeof(drm_mga_freelist_t), DRM_MEM_DRIVER);
        if (dev_priv->head == NULL)
-               return DRM_ERR(ENOMEM);
+               return -ENOMEM;
 
        memset(dev_priv->head, 0, sizeof(drm_mga_freelist_t));
        SET_AGE(&dev_priv->head->age, MGA_BUFFER_USED, 0);
@@ -267,7 +267,7 @@ static int mga_freelist_init(struct drm_device * dev, drm_mga_private_t * dev_pr
 
                entry = drm_alloc(sizeof(drm_mga_freelist_t), DRM_MEM_DRIVER);
                if (entry == NULL)
-                       return DRM_ERR(ENOMEM);
+                       return -ENOMEM;
 
                memset(entry, 0, sizeof(drm_mga_freelist_t));
 
@@ -399,7 +399,7 @@ int mga_driver_load(struct drm_device * dev, unsigned long flags)
 
        dev_priv = drm_alloc(sizeof(drm_mga_private_t), DRM_MEM_DRIVER);
        if (!dev_priv)
-               return DRM_ERR(ENOMEM);
+               return -ENOMEM;
 
        dev->dev_private = (void *)dev_priv;
        memset(dev_priv, 0, sizeof(drm_mga_private_t));
@@ -493,7 +493,7 @@ static int mga_do_agp_dma_bootstrap(struct drm_device * dev,
                          dma_bs->agp_size);
                return err;
        }
-       
+
        dev_priv->agp_size = agp_size;
        dev_priv->agp_handle = agp_req.handle;
 
@@ -550,7 +550,7 @@ static int mga_do_agp_dma_bootstrap(struct drm_device * dev,
        {
                struct drm_map_list *_entry;
                unsigned long agp_token = 0;
-               
+
                list_for_each_entry(_entry, &dev->maplist, head) {
                        if (_entry->map == dev->agp_buffer_map)
                                agp_token = _entry->user_token;
@@ -578,7 +578,7 @@ static int mga_do_agp_dma_bootstrap(struct drm_device * dev,
                DRM_ERROR("failed to ioremap agp regions! (%p, %p, %p)\n",
                          dev_priv->warp->handle, dev_priv->primary->handle,
                          dev->agp_buffer_map->handle);
-               return DRM_ERR(ENOMEM);
+               return -ENOMEM;
        }
 
        dev_priv->dma_access = MGA_PAGPXFER;
@@ -622,7 +622,7 @@ static int mga_do_pci_dma_bootstrap(struct drm_device * dev,
 
        if (dev->dma == NULL) {
                DRM_ERROR("dev->dma is NULL\n");
-               return DRM_ERR(EFAULT);
+               return -EFAULT;
        }
 
        /* Make drm_addbufs happy by not trying to create a mapping for less
@@ -656,7 +656,7 @@ static int mga_do_pci_dma_bootstrap(struct drm_device * dev,
 
        if (err != 0) {
                DRM_ERROR("Unable to allocate primary DMA region: %d\n", err);
-               return DRM_ERR(ENOMEM);
+               return -ENOMEM;
        }
 
        if (dev_priv->primary->size != dma_bs->primary_size) {
@@ -759,36 +759,30 @@ static int mga_do_dma_bootstrap(struct drm_device * dev,
        return err;
 }
 
-int mga_dma_bootstrap(DRM_IOCTL_ARGS)
+int mga_dma_bootstrap(struct drm_device *dev, void *data,
+                     struct drm_file *file_priv)
 {
-       DRM_DEVICE;
-       drm_mga_dma_bootstrap_t bootstrap;
+       drm_mga_dma_bootstrap_t *bootstrap = data;
        int err;
        static const int modes[] = { 0, 1, 2, 2, 4, 4, 4, 4 };
        const drm_mga_private_t *const dev_priv =
                (drm_mga_private_t *) dev->dev_private;
 
-       DRM_COPY_FROM_USER_IOCTL(bootstrap,
-                                (drm_mga_dma_bootstrap_t __user *) data,
-                                sizeof(bootstrap));
-
-       err = mga_do_dma_bootstrap(dev, &bootstrap);
+       err = mga_do_dma_bootstrap(dev, bootstrap);
        if (err) {
                mga_do_cleanup_dma(dev, FULL_CLEANUP);
                return err;
        }
 
        if (dev_priv->agp_textures != NULL) {
-               bootstrap.texture_handle = dev_priv->agp_textures->offset;
-               bootstrap.texture_size = dev_priv->agp_textures->size;
+               bootstrap->texture_handle = dev_priv->agp_textures->offset;
+               bootstrap->texture_size = dev_priv->agp_textures->size;
        } else {
-               bootstrap.texture_handle = 0;
-               bootstrap.texture_size = 0;
+               bootstrap->texture_handle = 0;
+               bootstrap->texture_size = 0;
        }
 
-       bootstrap.agp_mode = modes[bootstrap.agp_mode & 0x07];
-       DRM_COPY_TO_USER_IOCTL((drm_mga_dma_bootstrap_t __user *)data,
-                              bootstrap, sizeof(bootstrap));
+       bootstrap->agp_mode = modes[bootstrap->agp_mode & 0x07];
 
        return err;
 }
@@ -826,7 +820,7 @@ static int mga_do_init_dma(struct drm_device * dev, drm_mga_init_t * init)
        dev_priv->sarea = drm_getsarea(dev);
        if (!dev_priv->sarea) {
                DRM_ERROR("failed to find sarea!\n");
-               return DRM_ERR(EINVAL);
+               return -EINVAL;
        }
 
        if (!dev_priv->used_new_dma_init) {
@@ -837,29 +831,29 @@ static int mga_do_init_dma(struct drm_device * dev, drm_mga_init_t * init)
                dev_priv->status = drm_core_findmap(dev, init->status_offset);
                if (!dev_priv->status) {
                        DRM_ERROR("failed to find status page!\n");
-                       return DRM_ERR(EINVAL);
+                       return -EINVAL;
                }
                dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset);
                if (!dev_priv->mmio) {
                        DRM_ERROR("failed to find mmio region!\n");
-                       return DRM_ERR(EINVAL);
+                       return -EINVAL;
                }
                dev_priv->warp = drm_core_findmap(dev, init->warp_offset);
                if (!dev_priv->warp) {
                        DRM_ERROR("failed to find warp microcode region!\n");
-                       return DRM_ERR(EINVAL);
+                       return -EINVAL;
                }
                dev_priv->primary = drm_core_findmap(dev, init->primary_offset);
                if (!dev_priv->primary) {
                        DRM_ERROR("failed to find primary dma region!\n");
-                       return DRM_ERR(EINVAL);
+                       return -EINVAL;
                }
                dev->agp_buffer_token = init->buffers_offset;
                dev->agp_buffer_map =
                    drm_core_findmap(dev, init->buffers_offset);
                if (!dev->agp_buffer_map) {
                        DRM_ERROR("failed to find dma buffer region!\n");
-                       return DRM_ERR(EINVAL);
+                       return -EINVAL;
                }
 
                drm_core_ioremap(dev_priv->warp, dev);
@@ -877,7 +871,7 @@ static int mga_do_init_dma(struct drm_device * dev, drm_mga_init_t * init)
             ((dev->agp_buffer_map == NULL) ||
              (dev->agp_buffer_map->handle == NULL)))) {
                DRM_ERROR("failed to ioremap agp regions!\n");
-               return DRM_ERR(ENOMEM);
+               return -ENOMEM;
        }
 
        ret = mga_warp_install_microcode(dev_priv);
@@ -927,7 +921,7 @@ static int mga_do_init_dma(struct drm_device * dev, drm_mga_init_t * init)
 
        if (mga_freelist_init(dev, dev_priv) < 0) {
                DRM_ERROR("could not initialize freelist\n");
-               return DRM_ERR(ENOMEM);
+               return -ENOMEM;
        }
 
        return 0;
@@ -970,7 +964,7 @@ static int mga_do_cleanup_dma(struct drm_device *dev, int full_cleanup)
 
                                free_req.handle = dev_priv->agp_handle;
                                drm_agp_free(dev, &free_req);
-       
+
                                dev_priv->agp_textures = NULL;
                                dev_priv->agp_size = 0;
                                dev_priv->agp_handle = 0;
@@ -1004,23 +998,20 @@ static int mga_do_cleanup_dma(struct drm_device *dev, int full_cleanup)
                }
        }
 
-       return 0;
+       return err;
 }
 
-int mga_dma_init(DRM_IOCTL_ARGS)
+int mga_dma_init(struct drm_device *dev, void *data,
+                struct drm_file *file_priv)
 {
-       DRM_DEVICE;
-       drm_mga_init_t init;
+       drm_mga_init_t *init = data;
        int err;
 
-       LOCK_TEST_WITH_RETURN(dev, filp);
-
-       DRM_COPY_FROM_USER_IOCTL(init, (drm_mga_init_t __user *) data,
-                                sizeof(init));
+       LOCK_TEST_WITH_RETURN(dev, file_priv);
 
-       switch (init.func) {
+       switch (init->func) {
        case MGA_INIT_DMA:
-               err = mga_do_init_dma(dev, &init);
+               err = mga_do_init_dma(dev, init);
                if (err) {
                        (void)mga_do_cleanup_dma(dev, FULL_CLEANUP);
                }
@@ -1029,36 +1020,33 @@ int mga_dma_init(DRM_IOCTL_ARGS)
                return mga_do_cleanup_dma(dev, FULL_CLEANUP);
        }
 
-       return DRM_ERR(EINVAL);
+       return -EINVAL;
 }
 
 /* ================================================================
  * Primary DMA stream management
  */
 
-int mga_dma_flush(DRM_IOCTL_ARGS)
+int mga_dma_flush(struct drm_device *dev, void *data,
+                 struct drm_file *file_priv)
 {
-       DRM_DEVICE;
        drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
-       struct drm_lock lock;
-
-       LOCK_TEST_WITH_RETURN(dev, filp);
+       struct drm_lock *lock = data;
 
-       DRM_COPY_FROM_USER_IOCTL(lock, (struct drm_lock __user *) data,
-                                sizeof(lock));
+       LOCK_TEST_WITH_RETURN(dev, file_priv);
 
        DRM_DEBUG("%s%s%s\n",
-                 (lock.flags & _DRM_LOCK_FLUSH) ? "flush, " : "",
-                 (lock.flags & _DRM_LOCK_FLUSH_ALL) ? "flush all, " : "",
-                 (lock.flags & _DRM_LOCK_QUIESCENT) ? "idle, " : "");
+                 (lock->flags & _DRM_LOCK_FLUSH) ? "flush, " : "",
+                 (lock->flags & _DRM_LOCK_FLUSH_ALL) ? "flush all, " : "",
+                 (lock->flags & _DRM_LOCK_QUIESCENT) ? "idle, " : "");
 
        WRAP_WAIT_WITH_RETURN(dev_priv);
 
-       if (lock.flags & (_DRM_LOCK_FLUSH | _DRM_LOCK_FLUSH_ALL)) {
+       if (lock->flags & (_DRM_LOCK_FLUSH | _DRM_LOCK_FLUSH_ALL)) {
                mga_do_dma_flush(dev_priv);
        }
 
-       if (lock.flags & _DRM_LOCK_QUIESCENT) {
+       if (lock->flags & _DRM_LOCK_QUIESCENT) {
 #if MGA_DMA_DEBUG
                int ret = mga_do_wait_for_idle(dev_priv);
                if (ret < 0)
@@ -1072,12 +1060,12 @@ int mga_dma_flush(DRM_IOCTL_ARGS)
        }
 }
 
-int mga_dma_reset(DRM_IOCTL_ARGS)
+int mga_dma_reset(struct drm_device *dev, void *data,
+                 struct drm_file *file_priv)
 {
-       DRM_DEVICE;
        drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 
-       LOCK_TEST_WITH_RETURN(dev, filp);
+       LOCK_TEST_WITH_RETURN(dev, file_priv);
 
        return mga_do_dma_reset(dev_priv);
 }
@@ -1086,7 +1074,8 @@ int mga_dma_reset(DRM_IOCTL_ARGS)
  * DMA buffer management
  */
 
-static int mga_dma_get_buffers(DRMFILE filp, struct drm_device * dev, struct drm_dma * d)
+static int mga_dma_get_buffers(struct drm_device * dev,
+                              struct drm_file *file_priv, struct drm_dma * d)
 {
        struct drm_buf *buf;
        int i;
@@ -1094,61 +1083,56 @@ static int mga_dma_get_buffers(DRMFILE filp, struct drm_device * dev, struct drm
        for (i = d->granted_count; i < d->request_count; i++) {
                buf = mga_freelist_get(dev);
                if (!buf)
-                       return DRM_ERR(EAGAIN);
+                       return -EAGAIN;
 
-               buf->filp = filp;
+               buf->file_priv = file_priv;
 
                if (DRM_COPY_TO_USER(&d->request_indices[i],
                                     &buf->idx, sizeof(buf->idx)))
-                       return DRM_ERR(EFAULT);
+                       return -EFAULT;
                if (DRM_COPY_TO_USER(&d->request_sizes[i],
                                     &buf->total, sizeof(buf->total)))
-                       return DRM_ERR(EFAULT);
+                       return -EFAULT;
 
                d->granted_count++;
        }
        return 0;
 }
 
-int mga_dma_buffers(DRM_IOCTL_ARGS)
+int mga_dma_buffers(struct drm_device *dev, void *data,
+                   struct drm_file *file_priv)
 {
-       DRM_DEVICE;
        struct drm_device_dma *dma = dev->dma;
        drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
-       struct drm_dma __user *argp = (void __user *)data;
-       struct drm_dma d;
+       struct drm_dma *d = data;
        int ret = 0;
 
-       LOCK_TEST_WITH_RETURN(dev, filp);
-
-       DRM_COPY_FROM_USER_IOCTL(d, argp, sizeof(d));
+       LOCK_TEST_WITH_RETURN(dev, file_priv);
 
        /* Please don't send us buffers.
         */
-       if (d.send_count != 0) {
+       if (d->send_count != 0) {
                DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
-                         DRM_CURRENTPID, d.send_count);
-               return DRM_ERR(EINVAL);
+                         DRM_CURRENTPID, d->send_count);
+               return -EINVAL;
        }
 
        /* We'll send you buffers.
         */
-       if (d.request_count < 0 || d.request_count > dma->buf_count) {
+       if (d->request_count < 0 || d->request_count > dma->buf_count) {
                DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
-                         DRM_CURRENTPID, d.request_count, dma->buf_count);
-               return DRM_ERR(EINVAL);
+                         DRM_CURRENTPID, d->request_count, dma->buf_count);
+               return -EINVAL;
        }
 
        WRAP_TEST_WITH_RETURN(dev_priv);
 
-       d.granted_count = 0;
+       d->granted_count = 0;
 
-       if (d.request_count) {
-               ret = mga_dma_get_buffers(filp, dev, &d);
+       if (d->request_count) {
+               ret = mga_dma_get_buffers(dev, file_priv, d);
        }
 
-       DRM_COPY_TO_USER_IOCTL(argp, d, sizeof(d));
-
        return ret;
 }