The code does the checks on should_stop variable in the kernel
threads. The uisthread_stop function sets the should_stop and calls
KILL (eventually kill_pid) to stop the thread.
The checking of should_stop variable can be replaced to a call to
kthread_should_stop function and the setting of the should_stop and
a call to KILL can be replaced with kthread_stop function.
Cc: Ken Cox <jkc@xxxxxxxxxx>
Cc: Benjamin Romer <benjamin.romer@xxxxxxxxxx>
Signed-off-by: Devendra Naga <devendra.aaru@xxxxxxxxx>
---
drivers/staging/unisys/uislib/uisthread.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/drivers/staging/unisys/uislib/uisthread.c b/drivers/staging/unisys/uislib/uisthread.c
index c5c68cb..20a2a1b 100644
--- a/drivers/staging/unisys/uislib/uisthread.c
+++ b/drivers/staging/unisys/uislib/uisthread.c
@@ -41,7 +41,6 @@ int
uisthread_start(struct uisthread_info *thrinfo,
int (*threadfn)(void *), void *thrcontext, char *name)
{
- thrinfo->should_stop = 0;
/* used to stop the thread */
init_completion(&thrinfo->has_stopped);
thrinfo->task = kthread_run(threadfn, thrcontext, name);
@@ -58,24 +57,19 @@ EXPORT_SYMBOL_GPL(uisthread_start);
void
uisthread_stop(struct uisthread_info *thrinfo)
{
- int ret;
int stopped = 0;
if (thrinfo->id == 0)
return; /* thread not running */
LOGINF("uisthread_stop stopping id:%d\n", thrinfo->id);
- thrinfo->should_stop = 1;
- ret = KILL(thrinfo->id, SIGHUP, 1);
- if (ret) {
- LOGERR("unable to signal thread %d\n", ret);
- } else {
- /* give up if the thread has NOT died in 1 minute */
- if (wait_for_completion_timeout(&thrinfo->has_stopped, 60 * HZ))
- stopped = 1;
- else
- LOGERR("timed out trying to signal thread\n");
- }
+ kthread_stop(thrinfo->task);
+ /* give up if the thread has NOT died in 1 minute */
+ if (wait_for_completion_timeout(&thrinfo->has_stopped, 60 * HZ))
+ stopped = 1;
+ else
+ LOGERR("timed out trying to signal thread\n");
+
if (stopped) {
LOGINF("uisthread_stop stopped id:%d\n", thrinfo->id);
thrinfo->id = 0;
--
1.9.3
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