Changeset bb864a0 in mainline for uspace/srv/drivers/serial/serial.c

Timestamp:

2010-05-05T20:55:40Z (15 years ago)

Author:

Lenka Trochtova <trochtova.lenka@…>

Branches:

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

Children:

ba95e8f

Parents:

f658458

Message:

backup

File:

• uspace/srv/drivers/serial/serial.c (modified) (1 diff)

uspace/srv/drivers/serial/serial.c

@@ -95 +95 @@
 {
         printf(NAME ": serial_read %s\n", dev->name);
-        // TODO
-        return 0;
+        
+        int ret = 0;
+        
+        serial_dev_data_t *data = (serial_dev_data_t *)dev->driver_data;
+        fibril_mutex_lock(&data->mutex);
+        
+        while (!buf_is_empty(&data->input_buffer) && ret < count) {
+                buf[ret] = (char)buf_pop_front(&data->input_buffer);
+                ret++;
+        }
+        
+        fibril_mutex_unlock(&data->mutex);
+        
+        return ret;
 }