debugfs doesn't support mmap, so this code is never used.
Signed-off-by: Michael Neuling <mi...@neuling.org>
---
arch/powerpc/platforms/powernv/memtrace.c | 29 -----------------------
1 file changed, 29 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/memtrace.c
b/arch/powerpc/platforms/powernv/memtrace.c
index b99283df85..f73101119e 100644
--- a/arch/powerpc/platforms/powernv/memtrace.c
+++ b/arch/powerpc/platforms/powernv/memtrace.c
@@ -47,38 +47,9 @@ static ssize_t memtrace_read(struct file *filp, char __user
*ubuf,
return simple_read_from_buffer(ubuf, count, ppos, ent->mem, ent->size);
}
-static bool valid_memtrace_range(struct memtrace_entry *dev,
- unsigned long start, unsigned long size)
-{
- if ((start >= dev->start) &&
- ((start + size) <= (dev->start + dev->size)))
- return true;
-
- return false;
-}
-
-static int memtrace_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- unsigned long size = vma->vm_end - vma->vm_start;
- struct memtrace_entry *dev = filp->private_data;
-
- if (!valid_memtrace_range(dev, vma->vm_pgoff << PAGE_SHIFT, size))
- return -EINVAL;
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- if (remap_pfn_range(vma, vma->vm_start,
- vma->vm_pgoff + (dev->start >> PAGE_SHIFT),
- size, vma->vm_page_prot))
- return -EAGAIN;
-
- return 0;
-}
-
static const struct file_operations memtrace_fops = {
.llseek = default_llseek,
.read = memtrace_read,
- .mmap = memtrace_mmap,
.open = simple_open,
};
--
2.17.1
