staging: brcm80211: remove kernel_thread() for dhd_dpc_thread.

use kthread_run(), kthread_stop(), and kthread_should_stop().  Removes
dpc_pid, dpc_exited, and the call to DAEMONIZE.

dpc_tsk is NULL when not running.

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_linux.c b/drivers/staging/brcm80211/brcmfmac/dhd_linux.c
index a23191d..cb7af02 100644 (file)
--- a/drivers/staging/brcm80211/brcmfmac/dhd_linux.c
+++ b/drivers/staging/brcm80211/brcmfmac/dhd_linux.c
@@ -242,9 +242,8 @@ typedef struct dhd_info {
        struct semaphore sdsem;
        struct task_struct *watchdog_tsk;
        struct semaphore watchdog_sem;
-       long dpc_pid;
+       struct task_struct *dpc_tsk;
        struct semaphore dpc_sem;
-       struct completion dpc_exited;
 
        /* Thread to issue ioctl for multicast */
        long sysioc_pid;
@@ -1371,10 +1370,10 @@ static int dhd_dpc_thread(void *data)
        }
 #endif                         /* DHD_SCHED */
 
-       DAEMONIZE("dhd_dpc");
-
        /* Run until signal received */
        while (1) {
+               if(kthread_should_stop())
+                       break;
                if (down_interruptible(&dhd->dpc_sem) == 0) {
                        /* Call bus dpc unless it indicated down
                                 (then clean stop) */
@@ -1394,8 +1393,7 @@ static int dhd_dpc_thread(void *data)
        }
 
        WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_DPC);
-
-       complete_and_exit(&dhd->dpc_exited, 0);
+       return 0;
 }
 
 static void dhd_dpc(unsigned long data)
@@ -1417,7 +1415,7 @@ void dhd_sched_dpc(dhd_pub_t *dhdp)
 {
        dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
 
-       if (dhd->dpc_pid >= 0) {
+       if (dhd->dpc_tsk) {
                up(&dhd->dpc_sem);
                return;
        }
@@ -2019,11 +2017,15 @@ dhd_pub_t *dhd_attach(osl_t *osh, struct dhd_bus *bus, uint bus_hdrlen)
        if (dhd_dpc_prio >= 0) {
                /* Initialize DPC thread */
                sema_init(&dhd->dpc_sem, 0);
-               init_completion(&dhd->dpc_exited);
-               dhd->dpc_pid = kernel_thread(dhd_dpc_thread, dhd, 0);
+               dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
+               if (IS_ERR(dhd->dpc_tsk)) {
+                       printk(KERN_WARNING
+                               "dhd_dpc thread failed to start\n");
+                       dhd->dpc_tsk = NULL;
+               }
        } else {
                tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
-               dhd->dpc_pid = -1;
+               dhd->dpc_tsk = NULL;
        }
 
        if (dhd_sysioc) {
@@ -2344,10 +2346,11 @@ void dhd_detach(dhd_pub_t *dhdp)
                                dhd->watchdog_tsk = NULL;
                        }
 
-                       if (dhd->dpc_pid >= 0) {
-                               KILL_PROC(dhd->dpc_pid, SIGTERM);
-                               wait_for_completion(&dhd->dpc_exited);
-                       } else
+                       if (dhd->dpc_tsk) {
+                               kthread_stop(dhd->dpc_tsk);
+                               dhd->dpc_tsk = NULL;
+                       }
+                       else
                                tasklet_kill(&dhd->tasklet);
 
                        if (dhd->sysioc_pid >= 0) {