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wl1251: wait for join command complete event

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Poll for join command completion instead of waiting blindly for 10
msecs. There is a timeout of 100 msecs, if the command doesn't complete
by then, we return an error code.

Based on wl1271 patch 99d84c1de8
by Luciano Coelho.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Grazvydas Ignotas 2010-08-17 22:46:55 +03:00 committed by John W. Linville
parent 5b44a1b516
commit 7273b9700b
4 changed files with 34 additions and 6 deletions
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2
drivers/net/wireless/wl12xx/wl1251_boot.c
View file

@ -302,7 +302,7 @@ int wl1251_boot_run_firmware(struct wl1251 *wl)
ROAMING_TRIGGER_LOW_RSSI_EVENT_ID |
ROAMING_TRIGGER_REGAINED_RSSI_EVENT_ID |
REGAINED_BSS_EVENT_ID | BT_PTA_SENSE_EVENT_ID |
BT_PTA_PREDICTION_EVENT_ID;
BT_PTA_PREDICTION_EVENT_ID | JOIN_EVENT_COMPLETE_ID;
ret = wl1251_event_unmask(wl);
if (ret < 0) {

29
drivers/net/wireless/wl12xx/wl1251_event.c
View file

@ -97,6 +97,35 @@ static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
return 0;
}
/*
* Poll the mailbox event field until any of the bits in the mask is set or a
* timeout occurs (WL1251_EVENT_TIMEOUT in msecs)
*/
int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms)
{
u32 events_vector, event;
unsigned long timeout;
timeout = jiffies + msecs_to_jiffies(timeout_ms);
do {
if (time_after(jiffies, timeout))
return -ETIMEDOUT;
msleep(1);
/* read from both event fields */
wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector,
sizeof(events_vector));
event = events_vector & mask;
wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector,
sizeof(events_vector));
event |= events_vector & mask;
} while (!event);
return 0;
}
int wl1251_event_unmask(struct wl1251 *wl)
{
int ret;

1
drivers/net/wireless/wl12xx/wl1251_event.h
View file

@ -117,5 +117,6 @@ struct event_mailbox {
int wl1251_event_unmask(struct wl1251 *wl);
void wl1251_event_mbox_config(struct wl1251 *wl);
int wl1251_event_handle(struct wl1251 *wl, u8 mbox);
int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms);
#endif

8
drivers/net/wireless/wl12xx/wl1251_main.c
View file

@ -339,11 +339,9 @@ static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
if (ret < 0)
goto out;
/*
* FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
* locking we just sleep instead, for now
*/
msleep(10);
ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
if (ret < 0)
wl1251_warning("join timeout");
out:
return ret;