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path: root/0000-Kernel-4-13-CLASS_ATTR_STRING.patch
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diff -pNaru5 dgrp-1.9.orig/driver/2.6.27/dgrp_sysfs.c dgrp-1.9/driver/2.6.27/dgrp_sysfs.c
--- dgrp-1.9.orig/driver/2.6.27/dgrp_sysfs.c	2017-07-11 13:01:13.000000000 -0400
+++ dgrp-1.9/driver/2.6.27/dgrp_sysfs.c	2018-04-13 21:02:27.542053022 -0400
@@ -57,21 +57,24 @@
 
 static struct class *dgrp_class;
 struct device *dgrp_class_nodes_dev;
 struct device *dgrp_class_global_settings_dev;
 
-
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,13,0)
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
 static ssize_t dgrp_class_version_show(struct class *class, struct class_attribute *attr, char *buf)
 #else
 static ssize_t dgrp_class_version_show(struct class *class, char *buf)
 #endif
 {
 	return snprintf(buf, PAGE_SIZE, "%s\n", DIGI_VERSION);
 }
 static CLASS_ATTR(driver_version, 0400, dgrp_class_version_show, NULL);
-
+#else
+// CLASS_ATTR_STRING first appeared in 2.6.34
+static CLASS_ATTR_STRING(driver_version, 0400, __stringify(PAGE_SIZE) DIGI_VERSION);
+#endif
 
 static ssize_t dgrp_class_register_with_sysfs_show(struct device *c, struct device_attribute *attr, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "1\n");
 }
@@ -186,11 +189,15 @@ void dgrp_create_class_sysfs_files(void)
 {
 	int ret = 0;
         int max_majors = 1U << (32 - MINORBITS);
 
 	dgrp_class = class_create(THIS_MODULE, "digi_realport");
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,13,0)
 	ret = class_create_file(dgrp_class, &class_attr_driver_version);
+#else
+	ret = class_create_file(dgrp_class, &class_attr_driver_version.attr);
+#endif
 
 	dgrp_class_global_settings_dev = device_create(dgrp_class, NULL,
 		MKDEV(0, max_majors + 1), NULL, "driver_settings");
 
 	ret = sysfs_create_group(&dgrp_class_global_settings_dev->kobj,
@@ -218,11 +225,15 @@ void dgrp_remove_class_sysfs_files(void)
 	}
 
 	sysfs_remove_group(&dgrp_class_global_settings_dev->kobj,
 		&dgrp_global_settings_attribute_group);
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,13,0)
 	class_remove_file(dgrp_class, &class_attr_driver_version);
+#else
+	class_remove_file(dgrp_class, &class_attr_driver_version.attr);
+#endif
 
 	device_destroy(dgrp_class, MKDEV(0, max_majors + 1));
 	device_destroy(dgrp_class, MKDEV(0, max_majors + 2));
 	class_destroy(dgrp_class);
 }