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authorStefan Richter <stefanr@s5r6.in-berlin.de>2006-07-03 12:02:36 -0400
committerBen Collins <bcollins@ubuntu.com>2006-07-03 12:02:36 -0400
commitcab8d154e2ed43fe1495aa0e18103e747552891b (patch)
tree038af3da7bb8c8579b98b8ca58e3077797927a27 /drivers/ieee1394
parentd2f119fe319528da8c76a1107459d6f478cbf28c (diff)
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[PATCH] ieee1394: nodemgr: convert nodemgr_serialize semaphore to mutex
Another trivial sem2mutex conversion. Side note: nodemgr_serialize's purpose, when introduced in linux1394's revision 529 in July 2002, was to protect several data structures which are now largely handled by or together with Linux' driver core and are now protected by the LDM's own mechanisms. It may very well be possible to remove this mutex now. But fully parallelized node scanning is on our long-term TODO list anyway; the mutex will certainly go away then. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Diffstat (limited to 'drivers/ieee1394')
-rw-r--r--drivers/ieee1394/nodemgr.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index 2e6dc5990cef..f8f6079cc48c 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -158,7 +158,7 @@ static struct csr1212_bus_ops nodemgr_csr_ops = {
* but now we are much simpler because of the LDM.
*/
-static DECLARE_MUTEX(nodemgr_serialize);
+static DEFINE_MUTEX(nodemgr_serialize);
struct host_info {
struct hpsb_host *host;
@@ -1621,7 +1621,7 @@ static int nodemgr_host_thread(void *__hi)
if (kthread_should_stop())
goto exit;
- if (down_interruptible(&nodemgr_serialize)) {
+ if (mutex_lock_interruptible(&nodemgr_serialize)) {
if (try_to_freeze())
continue;
goto exit;
@@ -1650,7 +1650,7 @@ static int nodemgr_host_thread(void *__hi)
if (!nodemgr_check_irm_capability(host, reset_cycles) ||
!nodemgr_do_irm_duties(host, reset_cycles)) {
reset_cycles++;
- up(&nodemgr_serialize);
+ mutex_unlock(&nodemgr_serialize);
continue;
}
reset_cycles = 0;
@@ -1668,10 +1668,10 @@ static int nodemgr_host_thread(void *__hi)
/* Update some of our sysfs symlinks */
nodemgr_update_host_dev_links(host);
- up(&nodemgr_serialize);
+ mutex_unlock(&nodemgr_serialize);
}
unlock_exit:
- up(&nodemgr_serialize);
+ mutex_unlock(&nodemgr_serialize);
exit:
HPSB_VERBOSE("NodeMgr: Exiting thread");
return 0;