Changeset bf4cc3e in mainline

Timestamp:

2011-03-11T17:32:16Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

df949c5, fb1d4990

Parents:

71b6e92

Message:

Get bMaxPacketSize0 when initializing default pipe

File:

• uspace/lib/usb/src/pipesinit.c (modified) (2 diffs)

uspace/lib/usb/src/pipesinit.c

@@ -37 +37 @@
 #include <usb/pipes.h>
 #include <usb/dp.h>
+#include <usb/request.h>
 #include <errno.h>
 #include <assert.h>
@@ -370 +371 @@
         int rc = usb_endpoint_pipe_initialize(pipe, connection,
             0, USB_TRANSFER_CONTROL, 8, USB_DIRECTION_BOTH);
-
+        if (rc != EOK) {
+                return rc;
+        }
+        rc = usb_endpoint_pipe_start_session(pipe);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        uint8_t first[8];
+        size_t size = 0;
+        rc = usb_control_request_get(pipe, USB_REQUEST_TYPE_STANDARD,
+            USB_REQUEST_RECIPIENT_DEVICE, USB_DEVREQ_GET_DESCRIPTOR, 1 << 8,
+                        0, first, 8, &size);
+        usb_endpoint_pipe_end_session(pipe);
+        if (rc != EOK || size  != 8) {
+                return rc;
+        }
+
+        pipe->max_packet_size = first[7];
         return rc;
 }