[v2,05/11] wl1251: simplify ELP wakeup time calculation

Commit Message

Kalle Valo Nov. 30, 2009, 8:18 a.m. UTC

None

Patch

diff --git a/drivers/net/wireless/wl12xx/wl1251_ps.c b/drivers/net/wireless/wl12xx/wl1251_ps.c
index 54a2720..851dfb6 100644
--- a/drivers/net/wireless/wl12xx/wl1251_ps.c
+++ b/drivers/net/wireless/wl12xx/wl1251_ps.c
@@ -68,7 +68,7 @@  void wl1251_ps_elp_sleep(struct wl1251 *wl)
 
 int wl1251_ps_elp_wakeup(struct wl1251 *wl)
 {
-	unsigned long timeout;
+	unsigned long timeout, start;
 	u32 elp_reg;
 
 	if (!wl->elp)
@@ -76,6 +76,7 @@  int wl1251_ps_elp_wakeup(struct wl1251 *wl)
 
 	wl1251_debug(DEBUG_PSM, "waking up chip from elp");
 
+	start = jiffies;
 	timeout = jiffies + msecs_to_jiffies(WL1251_WAKEUP_TIMEOUT);
 
 	wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, ELPCTRL_WAKE_UP);
@@ -96,8 +97,7 @@  int wl1251_ps_elp_wakeup(struct wl1251 *wl)
 	}
 
 	wl1251_debug(DEBUG_PSM, "wakeup time: %u ms",
-		     jiffies_to_msecs(jiffies) -
-		     (jiffies_to_msecs(timeout) - WL1251_WAKEUP_TIMEOUT));
+		     jiffies_to_msecs(jiffies - start));
 
 	wl->elp = false;