platform/x86/intel/pmt: decouple sysfs and namespace

The PMT namespace includes the crashlog sysfs attribute information.
Other crashlog version/types may need different sysfs attributes.
Coupling the attributes with the namespace blocks this usage.

Decouple sysfs attributes from the name space and add them to the
specific entry.

Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Michael J. Ruhl <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ilpo Järvinen <[email protected]>

Author: mjruhl

drivers/platform/x86/intel/pmt/class.c

@@ -316,8 +316,8 @@ static int intel_pmt_dev_register(struct intel_pmt_entry *entry,
 
 	entry->kobj = &dev->kobj;
 
-	if (ns->attr_grp) {
-		ret = sysfs_create_group(entry->kobj, ns->attr_grp);
+	if (entry->attr_grp) {
+		ret = sysfs_create_group(entry->kobj, entry->attr_grp);
 		if (ret)
 			goto fail_sysfs_create_group;
 	}
@@ -358,8 +358,8 @@ static int intel_pmt_dev_register(struct intel_pmt_entry *entry,
 fail_add_endpoint:
 	sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr);
 fail_ioremap:
-	if (ns->attr_grp)
-		sysfs_remove_group(entry->kobj, ns->attr_grp);
+	if (entry->attr_grp)
+		sysfs_remove_group(entry->kobj, entry->attr_grp);
 fail_sysfs_create_group:
 	device_unregister(dev);
 fail_dev_create:
@@ -401,8 +401,8 @@ void intel_pmt_dev_destroy(struct intel_pmt_entry *entry,
 	if (entry->size)
 		sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr);
 
-	if (ns->attr_grp)
-		sysfs_remove_group(entry->kobj, ns->attr_grp);
+	if (entry->attr_grp)
+		sysfs_remove_group(entry->kobj, entry->attr_grp);
 
 	device_unregister(dev);
 	xa_erase(ns->xa, entry->devid);

drivers/platform/x86/intel/pmt/class.h

@@ -43,6 +43,7 @@ struct intel_pmt_entry {
 	struct pci_dev		*pcidev;
 	struct intel_pmt_header	header;
 	struct bin_attribute	pmt_bin_attr;
+	const struct attribute_group *attr_grp;
 	struct kobject		*kobj;
 	void __iomem		*disc_table;
 	void __iomem		*base;
@@ -58,7 +59,6 @@ struct intel_pmt_entry {
 struct intel_pmt_namespace {
 	const char *name;
 	struct xarray *xa;
-	const struct attribute_group *attr_grp;
 	int (*pmt_header_decode)(struct intel_pmt_entry *entry,
 				 struct device *dev);
 	int (*pmt_add_endpoint)(struct intel_vsec_device *ivdev,

drivers/platform/x86/intel/pmt/crashlog.c

@@ -243,14 +243,15 @@ static int pmt_crashlog_header_decode(struct intel_pmt_entry *entry,
 	/* Size is measured in DWORDS, but accessor returns bytes */
 	header->size = GET_SIZE(readl(disc_table + SIZE_OFFSET));
 
+	entry->attr_grp = &pmt_crashlog_group;
+
 	return 0;
 }
 
 static DEFINE_XARRAY_ALLOC(crashlog_array);
 static struct intel_pmt_namespace pmt_crashlog_ns = {
 	.name = "crashlog",
 	.xa = &crashlog_array,
-	.attr_grp = &pmt_crashlog_group,
 	.pmt_header_decode = pmt_crashlog_header_decode,
 };