Changeset 65369473 in mainline for uspace/lib

Timestamp:

2011-04-04T19:35:28Z (15 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

b6049d7, df40775

Parents:

63dabb6

Message:

Check reserved bw

Location:

uspace/lib/usb

Files:

• include/usb/host/bandwidth.h (modified) (1 diff)
• src/host/bandwidth.c (modified) (2 diffs)

uspace/lib/usb/include/usb/host/bandwidth.h

@@ -71 +71 @@
 
 int bandwidth_use(bandwidth_t *instance, usb_address_t address,
-    usb_endpoint_t endpoint, usb_direction_t direction);
+    usb_endpoint_t endpoint, usb_direction_t direction, size_t bw);
 
 int bandwidth_free(bandwidth_t *instance, usb_address_t address,

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

@@ -221 +221 @@
 /*----------------------------------------------------------------------------*/
 int bandwidth_use(bandwidth_t *instance, usb_address_t address,
-    usb_endpoint_t endpoint, usb_direction_t direction)
+    usb_endpoint_t endpoint, usb_direction_t direction, size_t bw)
 {
         assert(instance);
@@ -237 +237 @@
                     hash_table_get_instance(item, transfer_status_t, link);
                 assert(status);
-                if (status->used) {
-                        ret = EINPROGRESS;
+                if (status->required >= bw) {
+                        if (status->used) {
+                                ret = EINPROGRESS;
+                        }
+                        status->used = true;
+                } else {
+                        ret = ENOSPC;
                 }
-                status->used = true;
         } else {
                 ret = EINVAL;