diff options
| -rw-r--r-- | drivers/acpi/nfit.c | 16 | ||||
| -rw-r--r-- | drivers/nvdimm/namespace_devs.c | 28 | ||||
| -rw-r--r-- | drivers/nvdimm/nd.h | 1 | ||||
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 9 | ||||
| -rw-r--r-- | include/linux/libnvdimm.h | 2 |
5 files changed, 48 insertions, 8 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index c097f477c74c..14c2a07c9f3f 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -965,7 +965,7 @@ static size_t sizeof_nfit_set_info(int num_mappings) + num_mappings * sizeof(struct nfit_set_info_map); } -static int cmp_map(const void *m0, const void *m1) +static int cmp_map_compat(const void *m0, const void *m1) { const struct nfit_set_info_map *map0 = m0; const struct nfit_set_info_map *map1 = m1; @@ -974,6 +974,14 @@ static int cmp_map(const void *m0, const void *m1) sizeof(u64)); } +static int cmp_map(const void *m0, const void *m1) +{ + const struct nfit_set_info_map *map0 = m0; + const struct nfit_set_info_map *map1 = m1; + + return map0->region_offset - map1->region_offset; +} + /* Retrieve the nth entry referencing this spa */ static struct acpi_nfit_memory_map *memdev_from_spa( struct acpi_nfit_desc *acpi_desc, u16 range_index, int n) @@ -1029,6 +1037,12 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map), cmp_map, NULL); nd_set->cookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0); + + /* support namespaces created with the wrong sort order */ + sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map), + cmp_map_compat, NULL); + nd_set->altcookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0); + ndr_desc->nd_set = nd_set; devm_kfree(dev, info); diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index 62120c38d56b..aae7379af4e4 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -1534,6 +1534,7 @@ static int select_pmem_id(struct nd_region *nd_region, u8 *pmem_id) static int find_pmem_label_set(struct nd_region *nd_region, struct nd_namespace_pmem *nspm) { + u64 altcookie = nd_region_interleave_set_altcookie(nd_region); u64 cookie = nd_region_interleave_set_cookie(nd_region); struct nd_namespace_label *nd_label; u8 select_id[NSLABEL_UUID_LEN]; @@ -1542,8 +1543,10 @@ static int find_pmem_label_set(struct nd_region *nd_region, int rc = -ENODEV, l; u16 i; - if (cookie == 0) + if (cookie == 0) { + dev_dbg(&nd_region->dev, "invalid interleave-set-cookie\n"); return -ENXIO; + } /* * Find a complete set of labels by uuid. By definition we can start @@ -1552,13 +1555,24 @@ static int find_pmem_label_set(struct nd_region *nd_region, for_each_label(l, nd_label, nd_region->mapping[0].labels) { u64 isetcookie = __le64_to_cpu(nd_label->isetcookie); - if (isetcookie != cookie) - continue; + if (isetcookie != cookie) { + dev_dbg(&nd_region->dev, "invalid cookie in label: %pUb\n", + nd_label->uuid); + if (isetcookie != altcookie) + continue; + + dev_dbg(&nd_region->dev, "valid altcookie in label: %pUb\n", + nd_label->uuid); + } + + for (i = 0; nd_region->ndr_mappings; i++) { + if (has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i)) + continue; + if (has_uuid_at_pos(nd_region, nd_label->uuid, altcookie, i)) + continue; + break; + } - for (i = 0; nd_region->ndr_mappings; i++) - if (!has_uuid_at_pos(nd_region, nd_label->uuid, - cookie, i)) - break; if (i < nd_region->ndr_mappings) { /* * Give up if we don't find an instance of a diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 417e521d299c..fc870e55bb66 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -245,6 +245,7 @@ struct nd_region *to_nd_region(struct device *dev); int nd_region_to_nstype(struct nd_region *nd_region); int nd_region_register_namespaces(struct nd_region *nd_region, int *err); u64 nd_region_interleave_set_cookie(struct nd_region *nd_region); +u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region); void nvdimm_bus_lock(struct device *dev); void nvdimm_bus_unlock(struct device *dev); bool is_nvdimm_bus_locked(struct device *dev); diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index 9521696c9385..dc2e919daa39 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -379,6 +379,15 @@ u64 nd_region_interleave_set_cookie(struct nd_region *nd_region) return 0; } +u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region) +{ + struct nd_interleave_set *nd_set = nd_region->nd_set; + + if (nd_set) + return nd_set->altcookie; + return 0; +} + /* * Upon successful probe/remove, take/release a reference on the * associated interleave set (if present), and plant new btt + namespace diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index 3f021dc5da8c..30201b9be7bc 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -83,6 +83,8 @@ struct nd_cmd_desc { struct nd_interleave_set { u64 cookie; + /* compatibility with initial buggy Linux implementation */ + u64 altcookie; }; struct nd_region_desc { |