Commit f5cf8f07 authored by David Woodhouse's avatar David Woodhouse
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mtd: Disable mtdchar mmap on MMU systems 



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: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent ffe31501

drivers/mtd/mtdchar.c

+5 −1
Original line number Diff line number Diff line
@@ -1162,7 +1162,11 @@ static int mtdchar_mmap(struct file *file, struct vm_area_struct *vma) 
	resource_size_t start, off;

	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);

		start = map->phys;

		len = PAGE_ALIGN((start & ~PAGE_MASK) + map->size);