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staging: brcm80211: remove kernel_thread() for _iscan_sysioc_thread. 

Replace kernel_thread() with kthread_run, kthread_stop() and
kthread_should_stop().  Remove sysioc_pid, sysioc_exit, and DAEMONIZE.

sysioc_tsk is NULL when not running.

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jason Cooper 2010-10-09 14:51:13 -04:00 committed by Greg Kroah-Hartman
parent d809dcb9df
commit 5e2773ea93
1 changed files with 20 additions and 23 deletions
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43
drivers/staging/brcm80211/brcmfmac/wl_iw.c
View File

@ -18,6 +18,7 @@
#include <typedefs.h>
#include <linuxver.h>
#include <linux/kthread.h>
#include <osl.h>
#include <bcmutils.h>
@ -107,13 +108,6 @@ static wlc_ssid_t g_specific_ssid;
static wlc_ssid_t g_ssid;
#define DAEMONIZE(a) \
do { \
daemonize(a); \
allow_signal(SIGKILL); \
allow_signal(SIGTERM); \
} while (0)
#if defined(WL_IW_USE_ISCAN)
#define ISCAN_STATE_IDLE 0
#define ISCAN_STATE_SCANING 1
@ -133,9 +127,8 @@ typedef struct iscan_info {
iscan_buf_t *list_hdr;
iscan_buf_t *list_cur;
long sysioc_pid;
struct task_struct *sysioc_tsk;
struct semaphore sysioc_sem;
struct completion sysioc_exited;
#if defined CSCAN
char ioctlbuf[WLC_IOCTL_MEDLEN];
@ -966,7 +959,7 @@ wl_iw_iscan_get_aplist(struct net_device *dev,
if (!extra)
return -EINVAL;
if ((!iscan) || (iscan->sysioc_pid < 0)) {
if ((!iscan) || (!iscan->sysioc_tsk)) {
WL_ERROR(("%s error\n", __func__));
return 0;
}
@ -1184,10 +1177,11 @@ static int _iscan_sysioc_thread(void *data)
u32 status;
iscan_info_t *iscan = (iscan_info_t *) data;
static bool iscan_pass_abort = FALSE;
DAEMONIZE("iscan_sysioc");
status = WL_SCAN_RESULTS_PARTIAL;
while (down_interruptible(&iscan->sysioc_sem) == 0) {
if (kthread_should_stop())
break;
if (iscan->timer_on) {
del_timer_sync(&iscan->timer);
@ -1250,7 +1244,7 @@ static int _iscan_sysioc_thread(void *data)
del_timer_sync(&iscan->timer);
iscan->timer_on = 0;
}
complete_and_exit(&iscan->sysioc_exited, 0);
return 0;
}
#endif /* WL_IW_USE_ISCAN */
@ -1370,7 +1364,7 @@ wl_iw_iscan_set_scan(struct net_device *dev,
}
#endif
if ((!iscan) || (iscan->sysioc_pid < 0))
if ((!iscan) || (!iscan->sysioc_tsk))
return wl_iw_set_scan(dev, info, wrqu, extra);
if (g_scan_specified_ssid) {
@ -1751,8 +1745,8 @@ wl_iw_iscan_get_scan(struct net_device *dev,
return -EINVAL;
}
if ((!iscan) || (iscan->sysioc_pid < 0)) {
WL_ERROR(("%ssysioc_pid\n", __func__));
if ((!iscan) || (!iscan->sysioc_tsk)) {
WL_ERROR(("%ssysioc_tsk\n", __func__));
return wl_iw_get_scan(dev, info, dwrq, extra);
}
@ -3518,7 +3512,7 @@ void wl_iw_event(struct net_device *dev, wl_event_msg_t *e, void *data)
case WLC_E_SCAN_COMPLETE:
#if defined(WL_IW_USE_ISCAN)
if ((g_iscan) && (g_iscan->sysioc_pid > 0) &&
if ((g_iscan) && (g_iscan->sysioc_tsk) &&
(g_iscan->iscan_state != ISCAN_STATE_IDLE)) {
up(&g_iscan->sysioc_sem);
} else {
@ -3704,7 +3698,7 @@ int wl_iw_attach(struct net_device *dev, void *dhdp)
if (!iscan->iscan_ex_params_p)
return -ENOMEM;
iscan->iscan_ex_param_size = params_size;
iscan->sysioc_pid = -1;
iscan->sysioc_tsk = NULL;
g_iscan = iscan;
iscan->dev = dev;
@ -3716,10 +3710,12 @@ int wl_iw_attach(struct net_device *dev, void *dhdp)
iscan->timer.function = wl_iw_timerfunc;
sema_init(&iscan->sysioc_sem, 0);
init_completion(&iscan->sysioc_exited);
iscan->sysioc_pid = kernel_thread(_iscan_sysioc_thread, iscan, 0);
if (iscan->sysioc_pid < 0)
iscan->sysioc_tsk = kthread_run(_iscan_sysioc_thread, iscan,
"_iscan_sysioc");
if (IS_ERR(iscan->sysioc_tsk)) {
iscan->sysioc_tsk = NULL;
return -ENOMEM;
}
#endif /* defined(WL_IW_USE_ISCAN) */
iw = *(wl_iw_t **) netdev_priv(dev);
@ -3750,10 +3746,11 @@ void wl_iw_detach(void)
if (!iscan)
return;
if (iscan->sysioc_pid >= 0) {
KILL_PROC(iscan->sysioc_pid, SIGTERM);
wait_for_completion(&iscan->sysioc_exited);
if (iscan->sysioc_tsk) {
kthread_stop(iscan->sysioc_tsk);
iscan->sysioc_tsk = NULL;
}
MUTEX_LOCK_WL_SCAN_SET();
while (iscan->list_hdr) {
buf = iscan->list_hdr->next;