diff mbox series

wlcore: Fix command execute failure 19 for wl12xx

Message ID 20201231085343.24337-1-tony@atomide.com (mailing list archive)
State New
Headers show
Series wlcore: Fix command execute failure 19 for wl12xx | expand

Commit Message

Tony Lindgren Dec. 31, 2020, 8:53 a.m. UTC
We can currently get a "command execute failure 19" error on beacon loss
if the signal is weak:

wlcore: Beacon loss detected. roles:0xff
wlcore: Connection loss work (role_id: 0).
...
wlcore: ERROR command execute failure 19
...
WARNING: CPU: 0 PID: 1552 at drivers/net/wireless/ti/wlcore/main.c:803
...
(wl12xx_queue_recovery_work.part.0 [wlcore])
(wl12xx_cmd_role_start_sta [wlcore])
(wl1271_op_bss_info_changed [wlcore])
(ieee80211_prep_connection [mac80211])

Error 19 is defined as CMD_STATUS_WRONG_NESTING from the wlcore firmware,
and seems to mean that the firmware no longer wants to see the quirk
handling for WLCORE_QUIRK_START_STA_FAILS done.

This quirk got added with commit 18eab430700d ("wlcore: workaround
start_sta problem in wl12xx fw"), and it seems that this already got fixed
in the firmware long time ago back in 2012 as wl18xx never had this quirk
in place to start with.

As we no longer even support firmware that early, to me it seems that it's
safe to just drop WLCORE_QUIRK_START_STA_FAILS to fix the error. Looks
like earlier firmware got disabled back in 2013 with commit 0e284c074ef9
("wl12xx: increase minimum singlerole firmware version required").

If it turns out we still need WLCORE_QUIRK_START_STA_FAILS with any
firmware that the driver works with, we can simply revert this patch and
add extra checks for firmware version used.

With this fix wlcore reconnects properly after a beacon loss.

Cc: Raz Bouganim <r-bouganim@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/net/wireless/ti/wl12xx/main.c   |  3 ---
 drivers/net/wireless/ti/wlcore/main.c   | 15 +--------------
 drivers/net/wireless/ti/wlcore/wlcore.h |  3 ---
 3 files changed, 1 insertion(+), 20 deletions(-)

Comments

Kalle Valo Jan. 14, 2021, 5:34 p.m. UTC | #1
Tony Lindgren <tony@atomide.com> wrote:

> We can currently get a "command execute failure 19" error on beacon loss
> if the signal is weak:
> 
> wlcore: Beacon loss detected. roles:0xff
> wlcore: Connection loss work (role_id: 0).
> ...
> wlcore: ERROR command execute failure 19
> ...
> WARNING: CPU: 0 PID: 1552 at drivers/net/wireless/ti/wlcore/main.c:803
> ...
> (wl12xx_queue_recovery_work.part.0 [wlcore])
> (wl12xx_cmd_role_start_sta [wlcore])
> (wl1271_op_bss_info_changed [wlcore])
> (ieee80211_prep_connection [mac80211])
> 
> Error 19 is defined as CMD_STATUS_WRONG_NESTING from the wlcore firmware,
> and seems to mean that the firmware no longer wants to see the quirk
> handling for WLCORE_QUIRK_START_STA_FAILS done.
> 
> This quirk got added with commit 18eab430700d ("wlcore: workaround
> start_sta problem in wl12xx fw"), and it seems that this already got fixed
> in the firmware long time ago back in 2012 as wl18xx never had this quirk
> in place to start with.
> 
> As we no longer even support firmware that early, to me it seems that it's
> safe to just drop WLCORE_QUIRK_START_STA_FAILS to fix the error. Looks
> like earlier firmware got disabled back in 2013 with commit 0e284c074ef9
> ("wl12xx: increase minimum singlerole firmware version required").
> 
> If it turns out we still need WLCORE_QUIRK_START_STA_FAILS with any
> firmware that the driver works with, we can simply revert this patch and
> add extra checks for firmware version used.
> 
> With this fix wlcore reconnects properly after a beacon loss.
> 
> Cc: Raz Bouganim <r-bouganim@ti.com>
> Signed-off-by: Tony Lindgren <tony@atomide.com>

Failed to apply to wireless-drivers-next:

fatal: sha1 information is lacking or useless (drivers/net/wireless/ti/wl12xx/main.c).
error: could not build fake ancestor
Applying: wlcore: Fix command execute failure 19 for wl12xx
Patch failed at 0001 wlcore: Fix command execute failure 19 for wl12xx
The copy of the patch that failed is found in: .git/rebase-apply/patch

Patch set to Changes Requested.
diff mbox series

Patch

diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -635,7 +635,6 @@  static int wl12xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_LEGACY_NVS |
 			      WLCORE_QUIRK_DUAL_PROBE_TMPL |
 			      WLCORE_QUIRK_TKIP_HEADER_SPACE |
-			      WLCORE_QUIRK_START_STA_FAILS |
 			      WLCORE_QUIRK_AP_ZERO_SESSION_ID;
 		wl->sr_fw_name = WL127X_FW_NAME_SINGLE;
 		wl->mr_fw_name = WL127X_FW_NAME_MULTI;
@@ -659,7 +658,6 @@  static int wl12xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_LEGACY_NVS |
 			      WLCORE_QUIRK_DUAL_PROBE_TMPL |
 			      WLCORE_QUIRK_TKIP_HEADER_SPACE |
-			      WLCORE_QUIRK_START_STA_FAILS |
 			      WLCORE_QUIRK_AP_ZERO_SESSION_ID;
 		wl->plt_fw_name = WL127X_PLT_FW_NAME;
 		wl->sr_fw_name = WL127X_FW_NAME_SINGLE;
@@ -688,7 +686,6 @@  static int wl12xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN |
 			      WLCORE_QUIRK_DUAL_PROBE_TMPL |
 			      WLCORE_QUIRK_TKIP_HEADER_SPACE |
-			      WLCORE_QUIRK_START_STA_FAILS |
 			      WLCORE_QUIRK_AP_ZERO_SESSION_ID;
 
 		wlcore_set_min_fw_ver(wl, WL128X_CHIP_VER,
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -2878,21 +2878,8 @@  static int wlcore_join(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 
 	if (is_ibss)
 		ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
-	else {
-		if (wl->quirks & WLCORE_QUIRK_START_STA_FAILS) {
-			/*
-			 * TODO: this is an ugly workaround for wl12xx fw
-			 * bug - we are not able to tx/rx after the first
-			 * start_sta, so make dummy start+stop calls,
-			 * and then call start_sta again.
-			 * this should be fixed in the fw.
-			 */
-			wl12xx_cmd_role_start_sta(wl, wlvif);
-			wl12xx_cmd_role_stop_sta(wl, wlvif);
-		}
-
+	else
 		ret = wl12xx_cmd_role_start_sta(wl, wlvif);
-	}
 
 	pm_runtime_mark_last_busy(wl->dev);
 	pm_runtime_put_autosuspend(wl->dev);
diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h
--- a/drivers/net/wireless/ti/wlcore/wlcore.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore.h
@@ -547,9 +547,6 @@  wlcore_set_min_fw_ver(struct wl1271 *wl, unsigned int chip,
 /* Each RX/TX transaction requires an end-of-transaction transfer */
 #define WLCORE_QUIRK_END_OF_TRANSACTION		BIT(0)
 
-/* the first start_role(sta) sometimes doesn't work on wl12xx */
-#define WLCORE_QUIRK_START_STA_FAILS		BIT(1)
-
 /* wl127x and SPI don't support SDIO block size alignment */
 #define WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN		BIT(2)