Changeset 398c4d7 in mainline for uspace/lib/c/generic/devman.c

Timestamp:

2010-12-01T23:51:29Z (14 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

c245f16e

Parents:

2edcb63

Message:

More conservative locking in devman

Add mutex guard when accessing driver_t structure during driver assigning.

Added missing async_wait_for and removed extra mutex_unlock.

To speed-up answer time, driver start is done in separate fibril to avoid
blocking IPC connection fibril.

File:

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

uspace/lib/c/generic/devman.c

@@ -116 +116 @@
 {
         ipc_call_t answer;
-        async_send_1(phone, DEVMAN_ADD_MATCH_ID, match_id->score, &answer);
+        aid_t req = async_send_1(phone, DEVMAN_ADD_MATCH_ID, match_id->score, &answer);
         int retval = async_data_write_start(phone, match_id->id, str_size(match_id->id));
-        return retval;  
+        async_wait_for(req, NULL);
+        return retval;
 }