--- zzzz-none-000/linux-5.15.111/drivers/usb/storage/scsiglue.c	2023-05-11 14:00:40.000000000 +0000
+++ puma7-atom-6670-761/linux-5.15.111/drivers/usb/storage/scsiglue.c	2024-02-07 10:23:22.000000000 +0000
@@ -588,8 +588,37 @@
 }
 static DEVICE_ATTR_RW(max_sectors);
 
+#if defined (CONFIG_AVM_USB_PM)
+/* Output routine for the sysfs max_spinup_ms file */
+static ssize_t max_spinup_ms_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct us_data *us = host_to_us(dev_to_shost(dev));
+
+	return sprintf(buf, "%u\n", us->max_spinup_ms);
+}
+
+/* Input routine for the sysfs max_sectors file */
+static ssize_t max_spinup_ms_store(struct device *dev, struct device_attribute *attr, const char *buf,
+		size_t count)
+{
+	struct us_data *us = host_to_us(dev_to_shost(dev));
+	unsigned int ms;
+
+	if (sscanf(buf, "%u", &ms) > 0) {
+		us->max_spinup_ms = ms;
+		return count;
+	}
+	return -EINVAL;
+}
+
+static DEVICE_ATTR_RW(max_spinup_ms);
+#endif
+
 static struct device_attribute *sysfs_device_attr_list[] = {
 	&dev_attr_max_sectors,
+#if defined (CONFIG_AVM_USB_PM)
+	&dev_attr_max_spinup_ms,
+#endif
 	NULL,
 };