Changeset f658458 in mainline for uspace/lib/libdrv/generic/remote_char.c

Timestamp:

2010-05-02T20:49:09Z (14 years ago)

Author:

Lenka Trochtova <trochtova.lenka@…>

Branches:

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

Children:

bb864a0

Parents:

25a7e11d

Message:

parts of generic char interface, fixed some bugs

File:

• uspace/lib/libdrv/generic/remote_char.c (modified) (1 diff)

uspace/lib/libdrv/generic/remote_char.c

@@ -56 +56 @@
 
 static void remote_char_read(device_t *dev, void *iface, ipc_callid_t callid, ipc_call_t *call)
-{
+{       
         char_iface_t *char_iface = (char_iface_t *)iface;
-        if (!char_iface->read) {
-                ipc_answer_0(callid, ENOTSUP);
-                return;
-        }
         
         size_t len;
         if (!async_data_read_receive(&callid, &len)) {
                 // TODO handle protocol error
+                ipc_answer_0(callid, EINVAL);
+                return;
+        }
+        
+        if (!char_iface->read) {
+                async_data_read_finalize(callid, NULL, 0);
+                ipc_answer_0(callid, ENOTSUP);
                 return;
         }