Re: [PATCH] drivers:staging:ozwpan Replaced wrapper functions with actual spin lock function
From: Rupesh Gujare
Date: Tue Mar 04 2014 - 10:43:36 EST
On 04/03/14 07:57, Surendra Patil wrote:
* Replaced all the spin lock/unlock wrappers from oz_polling_lock_bh()
and oz_polllin_unlock_bh() with spin_lock_bh(&g_polling_lock) and
spin_unlock_bh(&g_polling_lock).Completely erased the wrappers defination
and declaration.
* declared g_polling_lock as global variable in header file and added comments to it.
Module builded successfully with sparse without warnings.
Signed-off-by: Surendra Patil <surendra.tux@xxxxxxxxx>
---
drivers/staging/ozwpan/ozpd.c | 28 ++++++++++++++--------------
drivers/staging/ozwpan/ozpd.h | 5 +++++
drivers/staging/ozwpan/ozproto.c | 15 +++++----------
drivers/staging/ozwpan/ozproto.h | 2 --
4 files changed, 24 insertions(+), 26 deletions(-)
diff --git a/drivers/staging/ozwpan/ozpd.c b/drivers/staging/ozwpan/ozpd.c
index 7436950..29a23a3 100644
--- a/drivers/staging/ozwpan/ozpd.c
+++ b/drivers/staging/ozwpan/ozpd.c
@@ -284,11 +284,11 @@ int oz_services_start(struct oz_pd *pd, u16 apps, int resume)
ai->app_id);
break;
}
- oz_polling_lock_bh();
+ spin_lock_bh(&g_polling_lock);
pd->total_apps |= (1<<ai->app_id);
if (resume)
pd->paused_apps &= ~(1<<ai->app_id);
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
}
}
return rc;
@@ -304,14 +304,14 @@ void oz_services_stop(struct oz_pd *pd, u16 apps, int pause)
oz_pd_dbg(pd, ON, "%s: (0x%x) pause(%d)\n", __func__, apps, pause);
for (ai = g_app_if; ai < &g_app_if[OZ_APPID_MAX]; ai++) {
if (apps & (1<<ai->app_id)) {
- oz_polling_lock_bh();
+ spin_lock_bh(&g_polling_lock);
if (pause) {
pd->paused_apps |= (1<<ai->app_id);
} else {
pd->total_apps &= ~(1<<ai->app_id);
pd->paused_apps &= ~(1<<ai->app_id);
}
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
ai->stop(pd, pause);
}
}
@@ -349,17 +349,17 @@ void oz_pd_stop(struct oz_pd *pd)
oz_dbg(ON, "oz_pd_stop() State = 0x%x\n", pd->state);
oz_pd_indicate_farewells(pd);
- oz_polling_lock_bh();
+ spin_lock_bh(&g_polling_lock);
stop_apps = pd->total_apps;
pd->total_apps = 0;
pd->paused_apps = 0;
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
oz_services_stop(pd, stop_apps, 0);
- oz_polling_lock_bh();
+ spin_lock_bh(&g_polling_lock);
oz_pd_set_state(pd, OZ_PD_S_STOPPED);
/* Remove from PD list.*/
list_del(&pd->link);
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
oz_dbg(ON, "pd ref count = %d\n", atomic_read(&pd->ref_count));
oz_pd_put(pd);
}
@@ -372,9 +372,9 @@ int oz_pd_sleep(struct oz_pd *pd)
int do_stop = 0;
u16 stop_apps;
- oz_polling_lock_bh();
+ spin_lock_bh(&g_polling_lock);
if (pd->state & (OZ_PD_S_SLEEP | OZ_PD_S_STOPPED)) {
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
return 0;
}
if (pd->keep_alive && pd->session_id)
@@ -383,7 +383,7 @@ int oz_pd_sleep(struct oz_pd *pd)
do_stop = 1;
stop_apps = pd->total_apps;
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
if (do_stop) {
oz_pd_stop(pd);
} else {
@@ -999,15 +999,15 @@ void oz_pd_indicate_farewells(struct oz_pd *pd)
const struct oz_app_if *ai = &g_app_if[OZ_APPID_USB-1];
while (1) {
- oz_polling_lock_bh();
+ spin_lock_bh(&g_polling_lock);
if (list_empty(&pd->farewell_list)) {
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
break;
}
f = list_first_entry(&pd->farewell_list,
struct oz_farewell, link);
list_del(&f->link);
- oz_polling_unlock_bh();
+ spin_unlock_bh(&g_polling_lock);
if (ai->farewell)
ai->farewell(pd, f->ep_num, f->report, f->len);
kfree(f);
diff --git a/drivers/staging/ozwpan/ozpd.h b/drivers/staging/ozwpan/ozpd.h
index 12c7129..56e6fdf 100644
--- a/drivers/staging/ozwpan/ozpd.h
+++ b/drivers/staging/ozwpan/ozpd.h
@@ -22,6 +22,11 @@
#define OZ_TIMER_HEARTBEAT 2
#define OZ_TIMER_STOP 3
+/*
+ *External spinlock variable
+ */
+extern spinlock_t g_polling_lock;
+
/* Data structure that hold information on a frame for transmisson. This is
* built when the frame is first transmitted and is used to rebuild the frame
* if a re-transmission is required.
diff --git a/drivers/staging/ozwpan/ozproto.c b/drivers/staging/ozwpan/ozproto.c
index e7138ed..c1325a6 100644
--- a/drivers/staging/ozwpan/ozproto.c
+++ b/drivers/staging/ozwpan/ozproto.c
@@ -38,9 +38,13 @@ struct oz_binding {
};
/*
+ * External variable
+ */
+
+DEFINE_SPINLOCK(g_polling_lock);
+/*
* Static external variables.
*/
-static DEFINE_SPINLOCK(g_polling_lock);
static LIST_HEAD(g_pd_list);
static LIST_HEAD(g_binding);
static DEFINE_SPINLOCK(g_binding_lock);
@@ -794,12 +798,3 @@ int oz_get_pd_list(struct oz_mac_addr *addr, int max_count)
return count;
}
-void oz_polling_lock_bh(void)
-{
- spin_lock_bh(&g_polling_lock);
-}
-
-void oz_polling_unlock_bh(void)
-{
- spin_unlock_bh(&g_polling_lock);
-}
diff --git a/drivers/staging/ozwpan/ozproto.h b/drivers/staging/ozwpan/ozproto.h
index 0c49c8a..cb38e02 100644
--- a/drivers/staging/ozwpan/ozproto.h
+++ b/drivers/staging/ozwpan/ozproto.h
@@ -59,8 +59,6 @@ void oz_binding_remove(const char *net_dev);
void oz_timer_add(struct oz_pd *pd, int type, unsigned long due_time);
void oz_timer_delete(struct oz_pd *pd, int type);
void oz_pd_request_heartbeat(struct oz_pd *pd);
-void oz_polling_lock_bh(void);
-void oz_polling_unlock_bh(void);
void oz_pd_heartbeat_handler(unsigned long data);
void oz_pd_timeout_handler(unsigned long data);
enum hrtimer_restart oz_pd_heartbeat_event(struct hrtimer *timer);
Acked-by: Rupesh Gujare <rupesh.gujare@xxxxxxxxx>
--
Regards,
Rupesh Gujare
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