Changeset 5f0fe4e9 in mainline for uspace/drv/usbmast/mast.c

Timestamp:

2011-05-11T19:37:16Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c372e03

Parents:

cf002dbf

Message:

Mass storage (small) refactoring

File:

• uspace/drv/usbmast/mast.c (modified) (2 diffs)

uspace/drv/usbmast/mast.c

@@ -173 +173 @@
 /** Get max LUN of a mass storage device.
  *
+ * @see usb_masstor_get_lun_count
+ *
  * @warning Error from this command does not necessarily indicate malfunction
  * of the device. Device does not need to support this request.
+ * You shall rather use usb_masstor_get_lun_count.
  *
  * @param dev Mass storage device.
@@ -195 +198 @@
 }
 
+/** Get number of LUNs supported by mass storage device.
+ *
+ * @warning This function hides any error during the request
+ * (typically that shall not be a problem).
+ *
+ * @param dev Mass storage device.
+ * @return Number of LUNs.
+ */
+size_t usb_masstor_get_lun_count(usb_device_t *dev)
+{
+        int max_lun = usb_massstor_get_max_lun(dev);
+        if (max_lun < 0) {
+                max_lun = 1;
+        } else {
+                max_lun++;
+        }
+
+        return (size_t) max_lun;
+}
+
 /**
  * @}