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ieee1394: small cleanup after "nopage"
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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parent
61db81214b
commit
c7ea990f87
@ -231,28 +231,20 @@ void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset,
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#ifdef CONFIG_MMU
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/* fault() handler for mmap access */
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static int dma_region_pagefault(struct vm_area_struct *vma,
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struct vm_fault *vmf)
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struct vm_fault *vmf)
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{
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unsigned long kernel_virt_addr;
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struct dma_region *dma = (struct dma_region *)vma->vm_private_data;
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if (!dma->kvirt)
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goto error;
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return VM_FAULT_SIGBUS;
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if (vmf->pgoff >= dma->n_pages)
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goto error;
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return VM_FAULT_SIGBUS;
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kernel_virt_addr = (unsigned long)dma->kvirt + (vmf->pgoff << PAGE_SHIFT);
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vmf->page = vmalloc_to_page((void *)kernel_virt_addr);
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vmf->page = vmalloc_to_page(dma->kvirt + (vmf->pgoff << PAGE_SHIFT));
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get_page(vmf->page);
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return 0;
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error:
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return VM_FAULT_SIGBUS;
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}
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static struct vm_operations_struct dma_region_vm_ops = {
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