Changeset d956aa5 in mainline for uspace/drv/uhci/callback.c

Timestamp:

2011-01-29T09:18:13Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

5286a2c

Parents:

113aef8

Message:

Fixed: memcpy direction

File:

• uspace/drv/uhci/callback.c (modified) (1 diff)

uspace/drv/uhci/callback.c

@@ -37 +37 @@
 
         /* update the old buffer */
-        if (instance->new_buffer) {
-                memcpy(instance->new_buffer, instance->old_buffer, instance->buffer_size);
+        if (instance->new_buffer &&
+          (instance->new_buffer != instance->old_buffer)) {
+                memcpy(instance->old_buffer, instance->new_buffer, instance->buffer_size);
                 free32(instance->new_buffer);
                 instance->new_buffer = NULL;