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wl1251: retry power save entry

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Port of the power save entry retry code from wl1251 driver version included
in the Maemo Fremantle kernel.
This tries to enable power save mode up to 3 times before failing.

Signed-off-by: David Gnedt <david.gnedt@davizone.at>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
David Gnedt
2014-01-07 13:05:45 +01:00
committed by John W. Linville
parent 64322e28d3
commit f7ad1eed4d
5 changed files with 58 additions and 1 deletions
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44
drivers/net/wireless/ti/wl1251/event.c
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@@ -46,6 +46,43 @@ static int wl1251_event_scan_complete(struct wl1251 *wl,
return ret;
}
#define WL1251_PSM_ENTRY_RETRIES 3
static int wl1251_event_ps_report(struct wl1251 *wl,
struct event_mailbox *mbox)
{
int ret = 0;
wl1251_debug(DEBUG_EVENT, "ps status: %x", mbox->ps_status);
switch (mbox->ps_status) {
case EVENT_ENTER_POWER_SAVE_FAIL:
wl1251_debug(DEBUG_PSM, "PSM entry failed");
if (wl->station_mode != STATION_POWER_SAVE_MODE) {
/* remain in active mode */
wl->psm_entry_retry = 0;
break;
}
if (wl->psm_entry_retry < WL1251_PSM_ENTRY_RETRIES) {
wl->psm_entry_retry++;
ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
} else {
wl1251_error("Power save entry failed, giving up");
wl->psm_entry_retry = 0;
}
break;
case EVENT_ENTER_POWER_SAVE_SUCCESS:
case EVENT_EXIT_POWER_SAVE_FAIL:
case EVENT_EXIT_POWER_SAVE_SUCCESS:
default:
wl->psm_entry_retry = 0;
break;
}
return 0;
}
static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
{
wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
@@ -80,6 +117,13 @@ static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
}
}
if (vector & PS_REPORT_EVENT_ID) {
wl1251_debug(DEBUG_EVENT, "PS_REPORT_EVENT");
ret = wl1251_event_ps_report(wl, mbox);
if (ret < 0)
return ret;
}
if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) {
wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");