Changeset af16ebe in mainline for uspace/drv/bus/usb/xhci/trb_ring.c

Timestamp:

2018-02-05T00:54:52Z (7 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

239eea41

Parents:

c21e6a5

git-author:

Ondřej Hlavatý <aearsis@…> (2018-02-05 00:49:07)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-02-05 00:54:52)

Message:

usb: redefine max_transfer_size

File:

• uspace/drv/bus/usb/xhci/trb_ring.c (modified) (2 diffs)

uspace/drv/bus/usb/xhci/trb_ring.c

@@ -223 +223 @@
         errno_t err;
         assert(trbs > 0);
+
+        if (trbs > xhci_trb_ring_size(ring))
+                return ELIMIT;
+
         fibril_mutex_lock(&ring->guard);
 
@@ -309 +313 @@
 }
 
+size_t xhci_trb_ring_size(xhci_trb_ring_t *ring)
+{
+        return ring->segment_count * SEGMENT_TRB_USEFUL_COUNT;
+}
+
 /**
  * Initializes an event ring.