diff options
Diffstat (limited to 'drivers/dma-buf/heaps')
| -rw-r--r-- | drivers/dma-buf/heaps/cma_heap.c | 23 | ||||
| -rw-r--r-- | drivers/dma-buf/heaps/system_heap.c | 9 |
2 files changed, 15 insertions, 17 deletions
diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c index ee899f8e6721..9512d050563a 100644 --- a/drivers/dma-buf/heaps/cma_heap.c +++ b/drivers/dma-buf/heaps/cma_heap.c @@ -165,13 +165,10 @@ static vm_fault_t cma_heap_vm_fault(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct cma_heap_buffer *buffer = vma->vm_private_data; - if (vmf->pgoff > buffer->pagecount) + if (vmf->pgoff >= buffer->pagecount) return VM_FAULT_SIGBUS; - vmf->page = buffer->pages[vmf->pgoff]; - get_page(vmf->page); - - return 0; + return vmf_insert_pfn(vma, vmf->address, page_to_pfn(buffer->pages[vmf->pgoff])); } static const struct vm_operations_struct dma_heap_vm_ops = { @@ -185,6 +182,8 @@ static int cma_heap_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma) if ((vma->vm_flags & (VM_SHARED | VM_MAYSHARE)) == 0) return -EINVAL; + vm_flags_set(vma, VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP); + vma->vm_ops = &dma_heap_vm_ops; vma->vm_private_data = buffer; @@ -275,8 +274,8 @@ static const struct dma_buf_ops cma_heap_buf_ops = { static struct dma_buf *cma_heap_allocate(struct dma_heap *heap, unsigned long len, - unsigned long fd_flags, - unsigned long heap_flags) + u32 fd_flags, + u64 heap_flags) { struct cma_heap *cma_heap = dma_heap_get_drvdata(heap); struct cma_heap_buffer *buffer; @@ -310,13 +309,13 @@ static struct dma_buf *cma_heap_allocate(struct dma_heap *heap, struct page *page = cma_pages; while (nr_clear_pages > 0) { - void *vaddr = kmap_atomic(page); + void *vaddr = kmap_local_page(page); memset(vaddr, 0, PAGE_SIZE); - kunmap_atomic(vaddr); + kunmap_local(vaddr); /* * Avoid wasting time zeroing memory if the process - * has been killed by by SIGKILL + * has been killed by SIGKILL. */ if (fatal_signal_pending(current)) goto free_cma; @@ -367,7 +366,7 @@ static const struct dma_heap_ops cma_heap_ops = { .allocate = cma_heap_allocate, }; -static int __add_cma_heap(struct cma *cma, void *data) +static int __init __add_cma_heap(struct cma *cma, void *data) { struct cma_heap *cma_heap; struct dma_heap_export_info exp_info; @@ -392,7 +391,7 @@ static int __add_cma_heap(struct cma *cma, void *data) return 0; } -static int add_default_cma_heap(void) +static int __init add_default_cma_heap(void) { struct cma *default_cma = dev_get_cma_area(NULL); int ret = 0; diff --git a/drivers/dma-buf/heaps/system_heap.c b/drivers/dma-buf/heaps/system_heap.c index 9076d47ed2ef..82b1b714300d 100644 --- a/drivers/dma-buf/heaps/system_heap.c +++ b/drivers/dma-buf/heaps/system_heap.c @@ -21,8 +21,6 @@ #include <linux/slab.h> #include <linux/vmalloc.h> -static struct dma_heap *sys_heap; - struct system_heap_buffer { struct dma_heap *heap; struct list_head attachments; @@ -333,8 +331,8 @@ static struct page *alloc_largest_available(unsigned long size, static struct dma_buf *system_heap_allocate(struct dma_heap *heap, unsigned long len, - unsigned long fd_flags, - unsigned long heap_flags) + u32 fd_flags, + u64 heap_flags) { struct system_heap_buffer *buffer; DEFINE_DMA_BUF_EXPORT_INFO(exp_info); @@ -421,9 +419,10 @@ static const struct dma_heap_ops system_heap_ops = { .allocate = system_heap_allocate, }; -static int system_heap_create(void) +static int __init system_heap_create(void) { struct dma_heap_export_info exp_info; + struct dma_heap *sys_heap; exp_info.name = "system"; exp_info.ops = &system_heap_ops; |