Merge branch 'firedtv-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'firedtv-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firedtv: dvb_frontend_info for FireDTV S2, fix "frequency limits undefined" error
  firedtv: massive refactoring
  firedtv: rename files, variables, functions from firesat to firedtv
  firedtv: Use DEFINE_SPINLOCK
  firedtv: fix registration - adapter number could only be zero
  firedtv: use length_field() of PMT as length
  firedtv: fix returned struct for ca_info
  firedtv: cleanups and minor fixes
  ieee1394: remove superfluous assertions
  ieee1394: inherit ud vendor_id from node vendor_id
  ieee1394: add hpsb_node_read() and hpsb_node_lock()
  ieee1394: use correct barrier types between accesses of nodeid and generation
  firesat: copyrights, rename to firedtv, API conversions, fix remote control input
  firesat: avc resend
  firesat: update isochronous interface, add CI support
  firesat: add DVB-S support for DVB-S2 devices
  firesat: fix DVB-S2 device recognition
  DVB: add firesat driver

1 files changed, 27 insertions, 4 deletions

diff --git a/drivers/ieee1394/ieee1394_transactions.c b/drivers/ieee1394/ieee1394_transactions.c
index 10c3d9f8c038..675b3135d5f1 100644
--- a/drivers/ieee1394/ieee1394_transactions.c
+++ b/drivers/ieee1394/ieee1394_transactions.c
@@ -501,8 +501,6 @@ int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation,
         if (length == 0)
                 return -EINVAL;
 
-        BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet
-
         packet = hpsb_make_readpacket(host, node, addr, length);
 
         if (!packet) {
@@ -550,8 +548,6 @@ int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
         if (length == 0)
                 return -EINVAL;
 
-        BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet
-
         packet = hpsb_make_writepacket(host, node, addr, buffer, length);
 
         if (!packet)
@@ -570,3 +566,30 @@ int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation,
 
         return retval;
 }
+
+int hpsb_lock(struct hpsb_host *host, nodeid_t node, unsigned int generation,
+              u64 addr, int extcode, quadlet_t *data, quadlet_t arg)
+{
+        struct hpsb_packet *packet;
+        int retval = 0;
+
+        packet = hpsb_make_lockpacket(host, node, addr, extcode, data, arg);
+        if (!packet)
+                return -ENOMEM;
+
+        packet->generation = generation;
+        retval = hpsb_send_packet_and_wait(packet);
+        if (retval < 0)
+                goto hpsb_lock_fail;
+
+        retval = hpsb_packet_success(packet);
+
+        if (retval == 0)
+                *data = packet->data[0];
+
+hpsb_lock_fail:
+        hpsb_free_tlabel(packet);
+        hpsb_free_packet(packet);
+
+        return retval;
+}