+static ssize_t wusb_retry_count_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+
+ return sprintf(buf, "%d\n", wusbhc->retry_count);
+}
+
+static ssize_t wusb_retry_count_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+ uint8_t retry_count;
+ ssize_t result;
+
+ result = sscanf(buf, "%hhu", &retry_count);
+
+ if (result != 1)
+ return -EINVAL;
+
+ wusbhc->retry_count = max_t(uint8_t, retry_count, WUSB_RETRY_COUNT_MAX);
+
+ return size;
+}
+static DEVICE_ATTR(wusb_retry_count, 0644, wusb_retry_count_show,
+ wusb_retry_count_store);
+