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Merge pull request #99 from lucaskawatoko/fix/rwnx-close-spurious-warn

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fix: avoid spurious WARN in rwnx_close during USB teardown
This commit is contained in:
MinQ
2026-09-24 20:51:36 +08:00
committed by GitHub
parent defc058cd4 9cf132d9b5
commit b72eea9564
1 changed files with 36 additions and 19 deletions
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drivers/aic8800/aic8800_fdrv/rwnx_main.c
+36 -19
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@@ -1518,18 +1518,30 @@ static int rwnx_close(struct net_device *dev)
RWNX_DBG(RWNX_FN_ENTRY_STR);
test_counter = waiting_counter;
while(atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_DISCONNECTING||
atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_CONNECTING){
AICWFDBG(LOGDEBUG, "%s wifi is connecting or disconnecting, waiting 200ms for state to stable\r\n", __func__);
msleep(200);
test_counter--;
if(test_counter == 0){
AICWFDBG(LOGERROR, "%s connecting or disconnecting, not finish\r\n", __func__);
WARN_ON(1);
break;
}
}
/*
* A CONNECTING/DISCONNECTING state is only left when the firmware answers
* the pending request. If the bus is already down the answer can never
* arrive: rwnx_send_msg() silently drops the message and returns 0
* (rwnx_msg_tx.c), so the wait below would always run its full timeout and
* fire the spurious WARN_ON() during USB teardown. Skip the wait when the
* bus is down, using the same condition the vif_started path uses below.
*/
if (bus_if &&
(usbdev == NULL || (usbdev->bus_if->state != BUS_DOWN_ST &&
usbdev->state != USB_DOWN_ST))) {
test_counter = waiting_counter;
while(atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_DISCONNECTING||
atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_CONNECTING){
AICWFDBG(LOGDEBUG, "%s wifi is connecting or disconnecting, waiting 200ms for state to stable\r\n", __func__);
msleep(200);
test_counter--;
if(test_counter == 0){
AICWFDBG(LOGERROR, "%s connecting or disconnecting, not finish\r\n", __func__);
WARN_ON(1);
break;
}
}
}
#if defined(AICWF_USB_SUPPORT) || defined(AICWF_SDIO_SUPPORT)
if (rwnx_hw->scanning){
@@ -1587,13 +1599,18 @@ static int rwnx_close(struct net_device *dev)
test_counter = waiting_counter;
if(atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_CONNECTED){
rwnx_set_conn_state(rwnx_vif, &rwnx_vif->drv_conn_state, RWNX_DRV_STATUS_DISCONNECTING);
rwnx_send_sm_disconnect_req(rwnx_hw, rwnx_vif, 3);
while (atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_DISCONNECTING) {
AICWFDBG(LOGDEBUG, "%s wifi is disconnecting, waiting 100ms for state to stable\r\n", __func__);
msleep(100);
test_counter--;
if (test_counter ==0)
break;
/* Same reasoning as above: with the bus down the disconnect
* confirmation cannot arrive, so do not wait for it. */
if (usbdev->bus_if->state != BUS_DOWN_ST &&
usbdev->state != USB_DOWN_ST) {
rwnx_send_sm_disconnect_req(rwnx_hw, rwnx_vif, 3);
while (atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_DISCONNECTING) {
AICWFDBG(LOGDEBUG, "%s wifi is disconnecting, waiting 100ms for state to stable\r\n", __func__);
msleep(100);
test_counter--;
if (test_counter ==0)
break;
}
}
}
}