Changeset 954ea70 in mainline for uspace/lib/usbvirt/main.c

Timestamp:

2010-10-22T14:55:33Z (15 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

b8a3cda

Parents:

a498728

Message:

usbvirt: standard requests handled better

Also, SET_ADDRESS works according to specification.

File:

• uspace/lib/usbvirt/main.c (modified) (2 diffs)

uspace/lib/usbvirt/main.c

@@ -122 +122 @@
                 return EINVAL;
         }
-        if ((buffer == NULL) || (size == 0)) {
+        if ((buffer == NULL) && (size != 0)) {
                 return EINVAL;
         }
@@ -131 +131 @@
         int rc;
         
-        req = async_send_2(phone,
+        req = async_send_3(phone,
             IPC_M_USBVIRT_DATA_FROM_DEVICE,
             dev->address,
             endpoint,
+            size,
             &answer_data);
         
-        rc = async_data_write_start(phone, buffer, size);
-        if (rc != EOK) {
-                async_wait_for(req, NULL);
-                return rc;
+        if (size > 0) {
+                rc = async_data_write_start(phone, buffer, size);
+                if (rc != EOK) {
+                        async_wait_for(req, NULL);
+                        return rc;
+                }
         }