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mtd: Disable mtdchar mmap on MMU systems

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This code was broken because it assumed that all MTD devices were map-based.
Disable it for now, until it can be fixed properly for the next merge window.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2012-10-09 15:08:10 +01:00
parent ffe3150125
commit f5cf8f0742
1 changed files with 5 additions and 1 deletions
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6
drivers/mtd/mtdchar.c
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@ -1162,7 +1162,11 @@ static int mtdchar_mmap(struct file *file, struct vm_area_struct *vma)
resource_size_t start, off; resource_size_t start, off;
unsigned long len, vma_len; unsigned long len, vma_len;
if (mtd->type == MTD_RAM || mtd->type == MTD_ROM) { /* This is broken because it assumes the MTD device is map-based
and that mtd->priv is a valid struct map_info. It should be
replaced with something that uses the mtd_get_unmapped_area()
operation properly. */
if (0 /*mtd->type == MTD_RAM || mtd->type == MTD_ROM*/) {
off = get_vm_offset(vma); off = get_vm_offset(vma);
start = map->phys; start = map->phys;
len = PAGE_ALIGN((start & ~PAGE_MASK) + map->size); len = PAGE_ALIGN((start & ~PAGE_MASK) + map->size);