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Message-Id: <20210908173307.9018-1-paskripkin@gmail.com>
Date: Wed, 8 Sep 2021 20:33:07 +0300
From: Pavel Skripkin <paskripkin@...il.com>
To: Larry.Finger@...inger.net, phil@...lpotter.co.uk,
gregkh@...uxfoundation.org, straube.linux@...il.com,
fmdefrancesco@...il.com
Cc: linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
Pavel Skripkin <paskripkin@...il.com>
Subject: [PATCH] staging: r8188eu: make _rtw_init_queue a macro
While testing latest updates I hit lockdep warning:
[ 42.694425] ============================================
[ 42.694785] WARNING: possible recursive locking detected
[ 42.695120] 5.14.0+ #25 Tainted: G C
[ 42.695422] --------------------------------------------
[ 42.695747] RTW_CMD_THREAD/317 is trying to acquire lock:
[ 42.696078] ffffc900006c90b0 (&pqueue->lock){+.-.}-{3:3}, at: _rtw_alloc_network+0x1e/0x321 [r8188eu]
[ 42.696686]
[ 42.696686] but task is already holding lock:
[ 42.697148] ffffc900006c9100 (&pqueue->lock){+.-.}-{3:3}, at: rtw_update_scanned_network+0x31/0x76b [r8188eu]
[ 42.697758]
[ 42.697758] other info that might help us debug this:
[ 42.698326] Possible unsafe locking scenario:
[ 42.698326]
[ 42.698696] CPU0
[ 42.698847] ----
[ 42.698997] lock(&pqueue->lock);
[ 42.699209] lock(&pqueue->lock);
[ 42.699418]
[ 42.699418] *** DEADLOCK ***
[ 42.699418]
[ 42.699768] May be due to missing lock nesting notation
It's false positive, since all queue spinlocks are initialized via
private API which has pqueue as agrument. Fix it by making
_rtw_init_queue a macro instead of function + removed unneeded _ prefix.
Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
---
drivers/staging/r8188eu/core/rtw_ap.c | 2 +-
drivers/staging/r8188eu/core/rtw_cmd.c | 2 +-
drivers/staging/r8188eu/core/rtw_mlme.c | 4 ++--
drivers/staging/r8188eu/core/rtw_mp.c | 2 +-
drivers/staging/r8188eu/core/rtw_recv.c | 8 +++----
drivers/staging/r8188eu/core/rtw_sta_mgt.c | 10 ++++-----
drivers/staging/r8188eu/core/rtw_xmit.c | 22 +++++++++----------
drivers/staging/r8188eu/hal/rtl8188eu_recv.c | 2 +-
.../staging/r8188eu/include/osdep_service.h | 6 ++++-
.../staging/r8188eu/os_dep/osdep_service.c | 6 -----
10 files changed, 31 insertions(+), 33 deletions(-)
diff --git a/drivers/staging/r8188eu/core/rtw_ap.c b/drivers/staging/r8188eu/core/rtw_ap.c
index 1c07ad28b242..ace11dde980d 100644
--- a/drivers/staging/r8188eu/core/rtw_ap.c
+++ b/drivers/staging/r8188eu/core/rtw_ap.c
@@ -19,7 +19,7 @@ void init_mlme_ap_info(struct adapter *padapter)
spin_lock_init(&pmlmepriv->bcn_update_lock);
/* for ACL */
- _rtw_init_queue(&pacl_list->acl_node_q);
+ rtw_init_queue(&pacl_list->acl_node_q);
start_ap_mode(padapter);
}
diff --git a/drivers/staging/r8188eu/core/rtw_cmd.c b/drivers/staging/r8188eu/core/rtw_cmd.c
index 738e1ec749be..2b7e76a682c7 100644
--- a/drivers/staging/r8188eu/core/rtw_cmd.c
+++ b/drivers/staging/r8188eu/core/rtw_cmd.c
@@ -23,7 +23,7 @@ static int _rtw_init_cmd_priv(struct cmd_priv *pcmdpriv)
/* sema_init(&(pcmdpriv->cmd_done_sema), 0); */
sema_init(&pcmdpriv->terminate_cmdthread_sema, 0);
- _rtw_init_queue(&pcmdpriv->cmd_queue);
+ rtw_init_queue(&pcmdpriv->cmd_queue);
/* allocate DMA-able/Non-Page memory for cmd_buf and rsp_buf */
diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index 37578638bb76..f311d6870196 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -48,8 +48,8 @@ int _rtw_init_mlme_priv(struct adapter *padapter)
pmlmepriv->scan_mode = SCAN_ACTIVE;/* 1: active, 0: pasive. Maybe someday we should rename this varable to "active_mode" (Jeff) */
spin_lock_init(&pmlmepriv->lock);
- _rtw_init_queue(&pmlmepriv->free_bss_pool);
- _rtw_init_queue(&pmlmepriv->scanned_queue);
+ rtw_init_queue(&pmlmepriv->free_bss_pool);
+ rtw_init_queue(&pmlmepriv->scanned_queue);
set_scanned_network_val(pmlmepriv, 0);
diff --git a/drivers/staging/r8188eu/core/rtw_mp.c b/drivers/staging/r8188eu/core/rtw_mp.c
index dabdd0406f30..bd797192f3d4 100644
--- a/drivers/staging/r8188eu/core/rtw_mp.c
+++ b/drivers/staging/r8188eu/core/rtw_mp.c
@@ -889,7 +889,7 @@ void _rtw_mp_xmit_priv(struct xmit_priv *pxmitpriv)
}
/* Init xmit extension buff */
- _rtw_init_queue(&pxmitpriv->free_xmit_extbuf_queue);
+ rtw_init_queue(&pxmitpriv->free_xmit_extbuf_queue);
pxmitpriv->pallocated_xmit_extbuf = vzalloc(num_xmit_extbuf * sizeof(struct xmit_buf) + 4);
diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c
index ba69cf9facfe..85510d598242 100644
--- a/drivers/staging/r8188eu/core/rtw_recv.c
+++ b/drivers/staging/r8188eu/core/rtw_recv.c
@@ -31,7 +31,7 @@ void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
spin_lock_init(&psta_recvpriv->lock);
- _rtw_init_queue(&psta_recvpriv->defrag_q);
+ rtw_init_queue(&psta_recvpriv->defrag_q);
}
@@ -45,9 +45,9 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
spin_lock_init(&precvpriv->lock);
- _rtw_init_queue(&precvpriv->free_recv_queue);
- _rtw_init_queue(&precvpriv->recv_pending_queue);
- _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
+ rtw_init_queue(&precvpriv->free_recv_queue);
+ rtw_init_queue(&precvpriv->recv_pending_queue);
+ rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
precvpriv->adapter = padapter;
diff --git a/drivers/staging/r8188eu/core/rtw_sta_mgt.c b/drivers/staging/r8188eu/core/rtw_sta_mgt.c
index c3600cb1790a..cd09c3503d93 100644
--- a/drivers/staging/r8188eu/core/rtw_sta_mgt.c
+++ b/drivers/staging/r8188eu/core/rtw_sta_mgt.c
@@ -18,7 +18,7 @@ static void _rtw_init_stainfo(struct sta_info *psta)
spin_lock_init(&psta->lock);
INIT_LIST_HEAD(&psta->list);
INIT_LIST_HEAD(&psta->hash_list);
- _rtw_init_queue(&psta->sleep_q);
+ rtw_init_queue(&psta->sleep_q);
psta->sleepq_len = 0;
_rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
@@ -68,13 +68,13 @@ u32 _rtw_init_sta_priv(struct sta_priv *pstapriv)
pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
((size_t)(pstapriv->pallocated_stainfo_buf) & 3);
- _rtw_init_queue(&pstapriv->free_sta_queue);
+ rtw_init_queue(&pstapriv->free_sta_queue);
spin_lock_init(&pstapriv->sta_hash_lock);
pstapriv->asoc_sta_count = 0;
- _rtw_init_queue(&pstapriv->sleep_q);
- _rtw_init_queue(&pstapriv->wakeup_q);
+ rtw_init_queue(&pstapriv->sleep_q);
+ rtw_init_queue(&pstapriv->wakeup_q);
psta = (struct sta_info *)(pstapriv->pstainfo_buf);
@@ -221,7 +221,7 @@ struct sta_info *rtw_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
preorder_ctrl->wend_b = 0xffff;
preorder_ctrl->wsize_b = 64;/* 64; */
- _rtw_init_queue(&preorder_ctrl->pending_recvframe_queue);
+ rtw_init_queue(&preorder_ctrl->pending_recvframe_queue);
rtw_init_recv_timer(preorder_ctrl);
}
diff --git a/drivers/staging/r8188eu/core/rtw_xmit.c b/drivers/staging/r8188eu/core/rtw_xmit.c
index 875d1bf1679c..59ff83f50188 100644
--- a/drivers/staging/r8188eu/core/rtw_xmit.c
+++ b/drivers/staging/r8188eu/core/rtw_xmit.c
@@ -17,7 +17,7 @@ static void _init_txservq(struct tx_servq *ptxservq)
{
INIT_LIST_HEAD(&ptxservq->tx_pending);
- _rtw_init_queue(&ptxservq->sta_pending);
+ rtw_init_queue(&ptxservq->sta_pending);
ptxservq->qcnt = 0;
}
@@ -52,18 +52,18 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
sema_init(&pxmitpriv->terminate_xmitthread_sema, 0);
/*
- Please insert all the queue initializaiton using _rtw_init_queue below
+ Please insert all the queue initializaiton using rtw_init_queue below
*/
pxmitpriv->adapter = padapter;
- _rtw_init_queue(&pxmitpriv->be_pending);
- _rtw_init_queue(&pxmitpriv->bk_pending);
- _rtw_init_queue(&pxmitpriv->vi_pending);
- _rtw_init_queue(&pxmitpriv->vo_pending);
- _rtw_init_queue(&pxmitpriv->bm_pending);
+ rtw_init_queue(&pxmitpriv->be_pending);
+ rtw_init_queue(&pxmitpriv->bk_pending);
+ rtw_init_queue(&pxmitpriv->vi_pending);
+ rtw_init_queue(&pxmitpriv->vo_pending);
+ rtw_init_queue(&pxmitpriv->bm_pending);
- _rtw_init_queue(&pxmitpriv->free_xmit_queue);
+ rtw_init_queue(&pxmitpriv->free_xmit_queue);
/*
Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
@@ -105,8 +105,8 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
/* init xmit_buf */
- _rtw_init_queue(&pxmitpriv->free_xmitbuf_queue);
- _rtw_init_queue(&pxmitpriv->pending_xmitbuf_queue);
+ rtw_init_queue(&pxmitpriv->free_xmitbuf_queue);
+ rtw_init_queue(&pxmitpriv->pending_xmitbuf_queue);
pxmitpriv->pallocated_xmitbuf = vzalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4);
@@ -147,7 +147,7 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
/* Init xmit extension buff */
- _rtw_init_queue(&pxmitpriv->free_xmit_extbuf_queue);
+ rtw_init_queue(&pxmitpriv->free_xmit_extbuf_queue);
pxmitpriv->pallocated_xmit_extbuf = vzalloc(num_xmit_extbuf * sizeof(struct xmit_buf) + 4);
diff --git a/drivers/staging/r8188eu/hal/rtl8188eu_recv.c b/drivers/staging/r8188eu/hal/rtl8188eu_recv.c
index 2da7bde80cc0..9c191b7ffbf1 100644
--- a/drivers/staging/r8188eu/hal/rtl8188eu_recv.c
+++ b/drivers/staging/r8188eu/hal/rtl8188eu_recv.c
@@ -39,7 +39,7 @@ int rtl8188eu_init_recv_priv(struct adapter *padapter)
(unsigned long)padapter);
/* init recv_buf */
- _rtw_init_queue(&precvpriv->free_recv_buf_queue);
+ rtw_init_queue(&precvpriv->free_recv_buf_queue);
precvpriv->pallocated_recv_buf = kzalloc(NR_RECVBUFF * sizeof(struct recv_buf) + 4,
GFP_KERNEL);
diff --git a/drivers/staging/r8188eu/include/osdep_service.h b/drivers/staging/r8188eu/include/osdep_service.h
index b832849bc308..6c693c625fcc 100644
--- a/drivers/staging/r8188eu/include/osdep_service.h
+++ b/drivers/staging/r8188eu/include/osdep_service.h
@@ -143,7 +143,11 @@ void *rtw_malloc2d(int h, int w, int size);
u32 _rtw_down_sema(struct semaphore *sema);
-void _rtw_init_queue(struct __queue *pqueue);
+#define rtw_init_queue(q) \
+ do { \
+ INIT_LIST_HEAD(&(q)->queue); \
+ spin_lock_init(&(q)->lock); \
+ } while (0)
u32 rtw_systime_to_ms(u32 systime);
u32 rtw_ms_to_systime(u32 ms);
diff --git a/drivers/staging/r8188eu/os_dep/osdep_service.c b/drivers/staging/r8188eu/os_dep/osdep_service.c
index 4328992907f2..4fda24bd9de4 100644
--- a/drivers/staging/r8188eu/os_dep/osdep_service.c
+++ b/drivers/staging/r8188eu/os_dep/osdep_service.c
@@ -67,12 +67,6 @@ u32 _rtw_down_sema(struct semaphore *sema)
return _SUCCESS;
}
-void _rtw_init_queue(struct __queue *pqueue)
-{
- INIT_LIST_HEAD(&pqueue->queue);
- spin_lock_init(&pqueue->lock);
-}
-
inline u32 rtw_systime_to_ms(u32 systime)
{
return systime * 1000 / HZ;
--
2.33.0
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