libnvdimm/namespace: Clean up holder_class_store()

Use sysfs_streq() in place of open-coded strcmp()'s that check for an
optional "\n" at the end of the input.

Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index 3677b0c..17fb7f9 100644 (file)
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -1506,13 +1506,13 @@ static ssize_t __holder_class_store(struct device *dev, const char *buf)
        if (dev->driver || ndns->claim)
                return -EBUSY;
 
-       if (strcmp(buf, "btt") == 0 || strcmp(buf, "btt\n") == 0)
+       if (sysfs_streq(buf, "btt"))
                ndns->claim_class = btt_claim_class(dev);
-       else if (strcmp(buf, "pfn") == 0 || strcmp(buf, "pfn\n") == 0)
+       else if (sysfs_streq(buf, "pfn"))
                ndns->claim_class = NVDIMM_CCLASS_PFN;
-       else if (strcmp(buf, "dax") == 0 || strcmp(buf, "dax\n") == 0)
+       else if (sysfs_streq(buf, "dax"))
                ndns->claim_class = NVDIMM_CCLASS_DAX;
-       else if (strcmp(buf, "") == 0 || strcmp(buf, "\n") == 0)
+       else if (sysfs_streq(buf, ""))
                ndns->claim_class = NVDIMM_CCLASS_NONE;
        else
                return -EINVAL;