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-rw-r--r--drivers/firewire/fw-device.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c
index b24090ae9c70..4ade867db888 100644
--- a/drivers/firewire/fw-device.c
+++ b/drivers/firewire/fw-device.c
@@ -230,6 +230,22 @@ static struct device_attribute config_rom_attribute = {
230 .show = show_config_rom_attribute, 230 .show = show_config_rom_attribute,
231}; 231};
232 232
233static ssize_t
234show_rom_index_attribute(struct device *dev,
235 struct device_attribute *attr, char *buf)
236{
237 struct fw_device *device = fw_device(dev->parent);
238 struct fw_unit *unit = fw_unit(dev);
239
240 return snprintf(buf, PAGE_SIZE, "%d\n",
241 unit->directory - device->config_rom);
242}
243
244static struct device_attribute rom_index_attribute = {
245 .attr = { .name = "rom_index", .mode = S_IRUGO, },
246 .show = show_rom_index_attribute,
247};
248
233struct read_quadlet_callback_data { 249struct read_quadlet_callback_data {
234 struct completion done; 250 struct completion done;
235 int rcode; 251 int rcode;
@@ -393,6 +409,11 @@ static void create_units(struct fw_device *device)
393 device_unregister(&unit->device); 409 device_unregister(&unit->device);
394 kfree(unit); 410 kfree(unit);
395 } 411 }
412
413 if (device_create_file(&unit->device, &rom_index_attribute) < 0) {
414 device_unregister(&unit->device);
415 kfree(unit);
416 }
396 } 417 }
397} 418}
398 419