diff options
Diffstat (limited to 'drivers/nvdimm/core.c')
| -rw-r--r-- | drivers/nvdimm/core.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/nvdimm/core.c b/drivers/nvdimm/core.c index cf99cce8ef33..dd824d7c2669 100644 --- a/drivers/nvdimm/core.c +++ b/drivers/nvdimm/core.c @@ -173,6 +173,46 @@ int nd_uuid_store(struct device *dev, u8 **uuid_out, const char *buf, return 0; } +ssize_t nd_sector_size_show(unsigned long current_lbasize, + const unsigned long *supported, char *buf) +{ + ssize_t len = 0; + int i; + + for (i = 0; supported[i]; i++) + if (current_lbasize == supported[i]) + len += sprintf(buf + len, "[%ld] ", supported[i]); + else + len += sprintf(buf + len, "%ld ", supported[i]); + len += sprintf(buf + len, "\n"); + return len; +} + +ssize_t nd_sector_size_store(struct device *dev, const char *buf, + unsigned long *current_lbasize, const unsigned long *supported) +{ + unsigned long lbasize; + int rc, i; + + if (dev->driver) + return -EBUSY; + + rc = kstrtoul(buf, 0, &lbasize); + if (rc) + return rc; + + for (i = 0; supported[i]; i++) + if (lbasize == supported[i]) + break; + + if (supported[i]) { + *current_lbasize = lbasize; + return 0; + } else { + return -EINVAL; + } +} + static ssize_t commands_show(struct device *dev, struct device_attribute *attr, char *buf) { |