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device-dax: Kill dax_region base

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Nothing consumes this attribute of a region and devres otherwise
remembers the value for de-allocation purposes.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2017-07-19 15:57:44 -07:00
parent 21b9e97950
commit 93694f9630
4 changed files with 4 additions and 8 deletions
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2
drivers/dax/dax-private.h
View File

@ -19,7 +19,6 @@
/**
* struct dax_region - mapping infrastructure for dax devices
* @id: kernel-wide unique region for a memory range
* @base: linear address corresponding to @res
* @kref: to pin while other agents have a need to do lookups
* @dev: parent device backing this region
* @align: allocation and mapping alignment for child dax devices
@ -28,7 +27,6 @@
*/
struct dax_region {
int id;
void *base;
struct kref kref;
struct device *dev;
unsigned int align;

5
drivers/dax/device-dax.h
View File

@ -17,9 +17,8 @@ struct dev_dax;
struct resource;
struct dax_region;
void dax_region_put(struct dax_region *dax_region);
struct dax_region *alloc_dax_region(struct device *parent,
int region_id, struct resource *res, unsigned int align,
void *addr, unsigned long flags);
struct dax_region *alloc_dax_region(struct device *parent, int region_id,
struct resource *res, unsigned int align, unsigned long flags);
struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region,
int id, struct resource *res, int count);
#endif /* __DEVICE_DAX_H__ */

3
drivers/dax/device.c
View File

@ -100,7 +100,7 @@ static void dax_region_unregister(void *region)
}
struct dax_region *alloc_dax_region(struct device *parent, int region_id,
struct resource *res, unsigned int align, void *addr,
struct resource *res, unsigned int align,
unsigned long pfn_flags)
{
struct dax_region *dax_region;
@ -130,7 +130,6 @@ struct dax_region *alloc_dax_region(struct device *parent, int region_id,
dax_region->id = region_id;
dax_region->align = align;
dax_region->dev = parent;
dax_region->base = addr;
if (sysfs_create_groups(&parent->kobj, dax_region_attribute_groups)) {
kfree(dax_region);
return NULL;

2
drivers/dax/pmem.c
View File

@ -125,7 +125,7 @@ static int dax_pmem_probe(struct device *dev)
return -EINVAL;
dax_region = alloc_dax_region(dev, region_id, &res,
le32_to_cpu(pfn_sb->align), addr, PFN_DEV|PFN_MAP);
le32_to_cpu(pfn_sb->align), PFN_DEV|PFN_MAP);
if (!dax_region)
return -ENOMEM;