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  • Committer: Suren A. Chilingaryan
  • Date: 2016-05-14 02:51:10 UTC
  • Revision ID: csa@suren.me-20160514025110-9c46hqdxdb2dpmf3
Fix handling of vm_pgoff in the driver

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Lines of Context:
driver/dev.c
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    int ret = 0;
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    unsigned long vma_size;
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    unsigned long addr = vmap->vm_pgoff;
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    mod_info_dbg("Entering mmap_addr\n");
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    /* Check sizes */
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    vma_size = (vmap->vm_end - vmap->vm_start);
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    if (addr % PAGE_SIZE) {
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        mod_info("mmap addr (0x%lx) is not aligned to page boundary\n", addr);
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        return -EINVAL;
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    }
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    ret = remap_pfn_range(vmap, vmap->vm_start, (addr >> PAGE_SHIFT), vma_size, vmap->vm_page_prot);
 
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    ret = remap_pfn_range(vmap, vmap->vm_start, vmap->vm_pgoff, vma_size, vmap->vm_page_prot);
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    if (ret) {
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        mod_info("remap_pfn_range failed\n");