提交 04c601bf 编写于 作者: A Artem Bityutskiy 提交者: David Woodhouse

mtd: introduce mtd_get_unmapped_area interface

Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
上级 7219778a
......@@ -1135,7 +1135,7 @@ static unsigned long mtdchar_get_unmapped_area(struct file *file,
if (offset > mtd->size - len)
return (unsigned long) -EINVAL;
return mtd->get_unmapped_area(mtd, len, offset, flags);
return mtd_get_unmapped_area(mtd, len, offset, flags);
}
/* can't map directly */
......
......@@ -726,8 +726,8 @@ static unsigned long concat_get_unmapped_area(struct mtd_info *mtd,
return (unsigned long) -EINVAL;
if (subdev->get_unmapped_area)
return subdev->get_unmapped_area(subdev, len, offset,
flags);
return mtd_get_unmapped_area(subdev, len, offset,
flags);
break;
}
......
......@@ -108,8 +108,7 @@ static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
struct mtd_part *part = PART(mtd);
offset += part->offset;
return part->master->get_unmapped_area(part->master, len, offset,
flags);
return mtd_get_unmapped_area(part->master, len, offset, flags);
}
static int part_read_oob(struct mtd_info *mtd, loff_t from,
......
......@@ -53,7 +53,7 @@ static unsigned long romfs_get_unmapped_area(struct file *file,
if (offset > mtd->size - len)
return (unsigned long) -EINVAL;
return mtd->get_unmapped_area(mtd, len, offset, flags);
return mtd_get_unmapped_area(mtd, len, offset, flags);
}
cant_map_directly:
......
......@@ -178,11 +178,6 @@ struct mtd_info {
int (*point) (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys);
void (*unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
/* Allow NOMMU mmap() to directly map the device (if not NULL)
* - return the address to which the offset maps
* - return -ENOSYS to indicate refusal to do the mapping
*/
unsigned long (*get_unmapped_area) (struct mtd_info *mtd,
unsigned long len,
unsigned long offset,
......@@ -293,6 +288,19 @@ static inline void mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
return mtd->unpoint(mtd, from, len);
}
/*
* Allow NOMMU mmap() to directly map the device (if not NULL)
* - return the address to which the offset maps
* - return -ENOSYS to indicate refusal to do the mapping
*/
static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd,
unsigned long len,
unsigned long offset,
unsigned long flags)
{
return mtd->get_unmapped_area(mtd, len, offset, flags);
}
static inline struct mtd_info *dev_to_mtd(struct device *dev)
{
return dev ? dev_get_drvdata(dev) : NULL;
......
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