Changeset b01995b in mainline for uspace/lib/usb/src/host/device_keeper.c

Timestamp:

2011-03-21T23:42:08Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

11dd29b, 62f4212

Parents:

31b568e (diff), 87644b4 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Fixes selecting a new USB address when max address has been reached.

Whitespace and code-style fixes, renames

File:

• uspace/lib/usb/src/host/device_keeper.c (modified) (1 diff)

uspace/lib/usb/src/host/device_keeper.c

@@ -214 +214 @@
         fibril_mutex_lock(&instance->guard);
 
-        usb_address_t new_address = instance->last_address + 1;
-        while (instance->devices[new_address].occupied) {
+        usb_address_t new_address = instance->last_address;
+        do {
+                ++new_address;
+                if (new_address > USB11_ADDRESS_MAX)
+                        new_address = 1;
                 if (new_address == instance->last_address) {
                         fibril_mutex_unlock(&instance->guard);
                         return ENOSPC;
                 }
-                if (new_address == USB11_ADDRESS_MAX)
-                        new_address = 1;
-                ++new_address;
-        }
+        } while (instance->devices[new_address].occupied);
 
         assert(new_address != USB_ADDRESS_DEFAULT);