diff options
Diffstat (limited to 'drivers/acpi/nfit.c')
| -rw-r--r-- | drivers/acpi/nfit.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 5230e8449d30..67d7489ced01 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 +974,18 @@ 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; + + if (map0->region_offset < map1->region_offset) + return -1; + else if (map0->region_offset > map1->region_offset) + return 1; + return 0; +} + /* 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 +1041,12 @@ 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); @@ -1806,6 +1824,9 @@ static void acpi_nfit_notify(struct acpi_device *adev, u32 event) dev_dbg(dev, "%s: event: %d\n", __func__, event); + if (event != NFIT_NOTIFY_UPDATE) + return; + device_lock(dev); if (!dev->driver) { /* dev->driver may be null if we're being removed */ |