[PATCH v2 17/19] cxl/pmem: add provider name to cxl pmem dimm attribute group

[Dave Jiang]

Add provider name in order to associate cxl test dimm from cxl_test to the
cxl pmem device when going through sysfs for security testing.

Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
 drivers/cxl/pmem.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c
index 9f34f8701b57..cb303edb925d 100644
--- a/drivers/cxl/pmem.c
+++ b/drivers/cxl/pmem.c
@@ -48,6 +48,15 @@ static void unregister_nvdimm(void *nvdimm)
        cxl_nvd->bridge = NULL;
 }
 
+static ssize_t provider_show(struct device *dev, struct device_attribute 
*attr, char *buf)
+{
+       struct nvdimm *nvdimm = to_nvdimm(dev);
+       struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
+
+       return sysfs_emit(buf, "%s\n", dev_name(&cxl_nvd->dev));
+}
+static DEVICE_ATTR_RO(provider);
+
 static ssize_t id_show(struct device *dev, struct device_attribute *attr, char 
*buf)
 {
        struct nvdimm *nvdimm = to_nvdimm(dev);
@@ -61,6 +70,7 @@ static DEVICE_ATTR_RO(id);
 
 static struct attribute *cxl_dimm_attributes[] = {
        &dev_attr_id.attr,
+       &dev_attr_provider.attr,
        NULL
 };