Commit ae1c9085 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'libnvdimm-fixes-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 

Pull libnvdimm fixes from Dan Williams:
 "A handful of small fixes for 4.13-rc2. Three of these fixes are tagged
  for -stable. They have all appeared in at least one -next release with
  no reported issues

   - Fix handling of media errors that span a sector

   - Fix support of multiple namespaces in a libnvdimm region being in
     device-dax mode

   - Clean up the machine check notifier properly when the nfit driver
     fails to register

   - Address a static analysis (smatch) report in device-dax"

* tag 'libnvdimm-fixes-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fix sysfs duplicate warnings
  MAINTAINERS: list drivers/acpi/nfit/ files for libnvdimm sub-system
  acpi/nfit: Fix memory corruption/Unregister mce decoder on failure
  device-dax: fix 'passing zero to ERR_PTR()' warning
  libnvdimm: fix badblock range handling of ARS range
parents c6efb454 bbb3be17

MAINTAINERS

+1 −1
Original line number Diff line number Diff line
@@ -7730,6 +7730,7 @@ Q: https://patchwork.kernel.org/project/linux-nvdimm/list/ 
T:	git git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git

S:	Supported

F:	drivers/nvdimm/*

F:	drivers/acpi/nfit/*

F:	include/linux/nd.h

F:	include/linux/libnvdimm.h

F:	include/uapi/linux/ndctl.h
@@ -7741,7 +7742,6 @@ Q: https://patchwork.kernel.org/project/linux-nvdimm/list/ 
S:	Supported

F:	drivers/nvdimm/blk.c

F:	drivers/nvdimm/region_devs.c

F:	drivers/acpi/nfit*



LIBNVDIMM BTT: BLOCK TRANSLATION TABLE

M:	Vishal Verma <vishal.l.verma@intel.com>

drivers/acpi/nfit/core.c

+9 −1
Original line number Diff line number Diff line
@@ -3160,6 +3160,8 @@ static struct acpi_driver acpi_nfit_driver = { 


static __init int nfit_init(void)

{

	int ret;



	BUILD_BUG_ON(sizeof(struct acpi_table_nfit) != 40);

	BUILD_BUG_ON(sizeof(struct acpi_nfit_system_address) != 56);

	BUILD_BUG_ON(sizeof(struct acpi_nfit_memory_map) != 48);
@@ -3187,8 +3189,14 @@ static __init int nfit_init(void) 
		return -ENOMEM;



	nfit_mce_register();

	ret = acpi_bus_register_driver(&acpi_nfit_driver);

	if (ret) {

		nfit_mce_unregister();

		destroy_workqueue(nfit_wq);

	}



	return ret;



	return acpi_bus_register_driver(&acpi_nfit_driver);

}



static __exit void nfit_exit(void)

drivers/dax/device-dax.h

+1 −1
Original line number Diff line number Diff line
@@ -21,5 +21,5 @@ struct dax_region *alloc_dax_region(struct device *parent, 
		int region_id, struct resource *res, unsigned int align,

		void *addr, unsigned long flags);

struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region,

		struct resource *res, int count);

		int id, struct resource *res, int count);

#endif /* __DEVICE_DAX_H__ */

drivers/dax/device.c

+23 −10
Original line number Diff line number Diff line
@@ -529,6 +529,7 @@ static void dev_dax_release(struct device *dev) 
	struct dax_region *dax_region = dev_dax->region;

	struct dax_device *dax_dev = dev_dax->dax_dev;



	if (dev_dax->id >= 0)

		ida_simple_remove(&dax_region->ida, dev_dax->id);

	dax_region_put(dax_region);

	put_dax(dax_dev);
@@ -559,7 +560,7 @@ static void unregister_dev_dax(void *dev) 
}



struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region,

		struct resource *res, int count)

		int id, struct resource *res, int count)

{

	struct device *parent = dax_region->dev;

	struct dax_device *dax_dev;
@@ -567,7 +568,10 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, 
	struct inode *inode;

	struct device *dev;

	struct cdev *cdev;

	int rc = 0, i;

	int rc, i;



	if (!count)

		return ERR_PTR(-EINVAL);



	dev_dax = kzalloc(sizeof(*dev_dax) + sizeof(*res) * count, GFP_KERNEL);

	if (!dev_dax)
@@ -587,19 +591,27 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, 
	if (i < count)

		goto err_id;



	dev_dax->id = ida_simple_get(&dax_region->ida, 0, 0, GFP_KERNEL);

	if (dev_dax->id < 0) {

		rc = dev_dax->id;

	if (id < 0) {

		id = ida_simple_get(&dax_region->ida, 0, 0, GFP_KERNEL);

		dev_dax->id = id;

		if (id < 0) {

			rc = id;

			goto err_id;

		}

	} else {

		/* region provider owns @id lifetime */

		dev_dax->id = -1;

	}



	/*

	 * No 'host' or dax_operations since there is no access to this

	 * device outside of mmap of the resulting character device.

	 */

	dax_dev = alloc_dax(dev_dax, NULL, NULL);

	if (!dax_dev)

	if (!dax_dev) {

		rc = -ENOMEM;

		goto err_dax;

	}



	/* from here on we're committed to teardown via dax_dev_release() */

	dev = &dev_dax->dev;
@@ -620,7 +632,7 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, 
	dev->parent = parent;

	dev->groups = dax_attribute_groups;

	dev->release = dev_dax_release;

	dev_set_name(dev, "dax%d.%d", dax_region->id, dev_dax->id);

	dev_set_name(dev, "dax%d.%d", dax_region->id, id);



	rc = cdev_device_add(cdev, dev);

	if (rc) {
@@ -636,6 +648,7 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, 
	return dev_dax;



 err_dax:

	if (dev_dax->id >= 0)

		ida_simple_remove(&dax_region->ida, dev_dax->id);

 err_id:

	kfree(dev_dax);

drivers/dax/pmem.c

+7 −5
Original line number Diff line number Diff line
@@ -58,13 +58,12 @@ static void dax_pmem_percpu_kill(void *data) 


static int dax_pmem_probe(struct device *dev)

{

	int rc;

	void *addr;

	struct resource res;

	int rc, id, region_id;

	struct nd_pfn_sb *pfn_sb;

	struct dev_dax *dev_dax;

	struct dax_pmem *dax_pmem;

	struct nd_region *nd_region;

	struct nd_namespace_io *nsio;

	struct dax_region *dax_region;

	struct nd_namespace_common *ndns;
@@ -123,14 +122,17 @@ static int dax_pmem_probe(struct device *dev) 
	/* adjust the dax_region resource to the start of data */

	res.start += le64_to_cpu(pfn_sb->dataoff);



	nd_region = to_nd_region(dev->parent);

	dax_region = alloc_dax_region(dev, nd_region->id, &res,

	rc = sscanf(dev_name(&ndns->dev), "namespace%d.%d", &region_id, &id);

	if (rc != 2)

		return -EINVAL;



	dax_region = alloc_dax_region(dev, region_id, &res,

			le32_to_cpu(pfn_sb->align), addr, PFN_DEV|PFN_MAP);

	if (!dax_region)

		return -ENOMEM;



	/* TODO: support for subdividing a dax region... */

	dev_dax = devm_create_dev_dax(dax_region, &res, 1);

	dev_dax = devm_create_dev_dax(dax_region, id, &res, 1);



	/* child dev_dax instances now own the lifetime of the dax_region */

	dax_region_put(dax_region);

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