diff options
Diffstat (limited to 'drivers/staging/android/ion/ion.c')
| -rw-r--r-- | drivers/staging/android/ion/ion.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index 3d5bf1472236..389b8f67a2ec 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -408,6 +408,7 @@ static struct ion_handle *ion_handle_lookup(struct ion_client *client, while (n) { struct ion_handle *entry = rb_entry(n, struct ion_handle, node); + if (buffer < entry->buffer) n = n->rb_left; else if (buffer > entry->buffer) @@ -626,6 +627,10 @@ static void ion_handle_kmap_put(struct ion_handle *handle) { struct ion_buffer *buffer = handle->buffer; + if (!handle->kmap_cnt) { + WARN(1, "%s: Double unmap detected! bailing...\n", __func__); + return; + } handle->kmap_cnt--; if (!handle->kmap_cnt) ion_buffer_kmap_put(buffer); @@ -720,9 +725,11 @@ static int ion_get_client_serial(const struct rb_root *root, { int serial = -1; struct rb_node *node; + for (node = rb_first(root); node; node = rb_next(node)) { struct ion_client *client = rb_entry(node, struct ion_client, node); + if (strcmp(client->name, name)) continue; serial = max(serial, client->display_serial); @@ -1035,12 +1042,14 @@ static int ion_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma) static void ion_dma_buf_release(struct dma_buf *dmabuf) { struct ion_buffer *buffer = dmabuf->priv; + ion_buffer_put(buffer); } static void *ion_dma_buf_kmap(struct dma_buf *dmabuf, unsigned long offset) { struct ion_buffer *buffer = dmabuf->priv; + return buffer->vaddr + offset * PAGE_SIZE; } @@ -1292,6 +1301,7 @@ static long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) case ION_IOC_IMPORT: { struct ion_handle *handle; + handle = ion_import_dma_buf(client, data.fd.fd); if (IS_ERR(handle)) ret = PTR_ERR(handle); @@ -1393,6 +1403,7 @@ static int ion_debug_heap_show(struct seq_file *s, void *unused) struct ion_client *client = rb_entry(n, struct ion_client, node); size_t size = ion_debug_heap_total(client, heap->id); + if (!size) continue; if (client->task) { @@ -1516,6 +1527,7 @@ void ion_device_add_heap(struct ion_device *dev, struct ion_heap *heap) if (!debug_file) { char buf[256], *path; + path = dentry_path(dev->heaps_debug_root, buf, 256); pr_err("Failed to create heap debugfs at %s/%s\n", path, heap->name); @@ -1531,6 +1543,7 @@ void ion_device_add_heap(struct ion_device *dev, struct ion_heap *heap) &debug_shrink_fops); if (!debug_file) { char buf[256], *path; + path = dentry_path(dev->heaps_debug_root, buf, 256); pr_err("Failed to create heap shrinker debugfs at %s/%s\n", path, debug_name); @@ -1606,6 +1619,7 @@ void __init ion_reserve(struct ion_platform_data *data) if (data->heaps[i].base == 0) { phys_addr_t paddr; + paddr = memblock_alloc_base(data->heaps[i].size, data->heaps[i].align, MEMBLOCK_ALLOC_ANYWHERE); |