Changeset fc3dfe6d in mainline for uspace/lib/usbhost/src/bus.c

Timestamp:

2018-02-11T17:18:17Z (7 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

d345ce2

Parents:

239eea41

git-author:

Ondřej Hlavatý <aearsis@…> (2018-02-10 22:16:55)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-02-11 17:18:17)

Message:

usb: fix relying on negative errnos

File:

• uspace/lib/usbhost/src/bus.c (modified) (2 diffs)

uspace/lib/usbhost/src/bus.c

@@ -646 +646 @@
  * @param name Communication identifier (for nicer output).
  */
-ssize_t bus_device_send_batch_sync(device_t *device, usb_target_t target,
+errno_t bus_device_send_batch_sync(device_t *device, usb_target_t target,
     usb_direction_t direction, char *data, size_t size, uint64_t setup_data,
-    const char *name)
+    const char *name, size_t *transferred_size)
 {
         sync_data_t sd = { .done = false };
@@ -668 +668 @@
         fibril_mutex_unlock(&sd.done_mtx);
 
-        return (sd.error == EOK)
-                ? (ssize_t) sd.transferred_size
-                : (ssize_t) sd.error;
+        if (transferred_size)
+                *transferred_size = sd.transferred_size;
+
+        return sd.error;
 }