提交 ae1c9085 编写于 作者: L Linus Torvalds

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
......@@ -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>
......
......@@ -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)
......
......@@ -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__ */
......@@ -529,7 +529,8 @@ 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;
ida_simple_remove(&dax_region->ida, dev_dax->id);
if (dev_dax->id >= 0)
ida_simple_remove(&dax_region->ida, dev_dax->id);
dax_region_put(dax_region);
put_dax(dax_dev);
kfree(dev_dax);
......@@ -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)
......@@ -587,10 +591,16 @@ 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;
goto err_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;
}
/*
......@@ -598,8 +608,10 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region,
* 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) {
......@@ -636,7 +648,8 @@ struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region,
return dev_dax;
err_dax:
ida_simple_remove(&dax_region->ida, dev_dax->id);
if (dev_dax->id >= 0)
ida_simple_remove(&dax_region->ida, dev_dax->id);
err_id:
kfree(dev_dax);
......
......@@ -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);
......
......@@ -421,14 +421,15 @@ static void set_badblock(struct badblocks *bb, sector_t s, int num)
static void __add_badblock_range(struct badblocks *bb, u64 ns_offset, u64 len)
{
const unsigned int sector_size = 512;
sector_t start_sector;
sector_t start_sector, end_sector;
u64 num_sectors;
u32 rem;
start_sector = div_u64(ns_offset, sector_size);
num_sectors = div_u64_rem(len, sector_size, &rem);
end_sector = div_u64_rem(ns_offset + len, sector_size, &rem);
if (rem)
num_sectors++;
end_sector++;
num_sectors = end_sector - start_sector;
if (unlikely(num_sectors > (u64)INT_MAX)) {
u64 remaining = num_sectors;
......
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