Changeset ece7f78 in mainline for uspace/drv/bus/usb/ohci/root_hub.h

Timestamp:

2011-07-11T09:52:15Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

c85804f

Parents:

aa81adc

Message:

OHCI: Root hub: remove allocation and fix rare bug.

Limit port-count to 15 (specs say so on page 124).
Use array of max possible size (2 bytes), instead of heap allocation.
Fix issue with changes happening on port 8 on 8-port hub.

File:

• uspace/drv/bus/usb/ohci/root_hub.h (modified) (1 diff)

uspace/drv/bus/usb/ohci/root_hub.h

@@ -57 +57 @@
         /** pre-allocated interrupt mask
          *
-         * This is allocated when initializing instance, so that memory
-         * allocation is not needed when processing request. Buffer is used for
-         * interrupt bitmask.
+         * OHCI support max 15 ports (specs page 124) + one global bit, it
+         * gives max 2 bytes.
          */
-        uint8_t * interrupt_buffer;
+        uint8_t interrupt_buffer[2];
         /** size of interrupt buffer */
         size_t interrupt_mask_size;