1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
From a84a60ccdd65278485fb495f468a5ab91a75c649 Mon Sep 17 00:00:00 2001
From: Arend van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 11 Jul 2019 11:05:06 +0200
Subject: [PATCH] Revert "brcmfmac: fix NULL pointer derefence during USB
disconnect"
This reverts commit 5cdb0ef6144f47440850553579aa923c20a63f23. Subsequent
changes make rework the driver code fixing the issue differently.
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 11 ++---------
.../wireless/broadcom/brcm80211/brcmfmac/bcdc.h | 6 ++----
.../wireless/broadcom/brcm80211/brcmfmac/core.c | 4 +---
.../broadcom/brcm80211/brcmfmac/fwsignal.c | 16 ++++------------
.../broadcom/brcm80211/brcmfmac/fwsignal.h | 3 +--
.../wireless/broadcom/brcm80211/brcmfmac/proto.c | 10 ++--------
.../wireless/broadcom/brcm80211/brcmfmac/proto.h | 3 +--
7 files changed, 13 insertions(+), 40 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -479,18 +479,11 @@ fail:
return -ENOMEM;
}
-void brcmf_proto_bcdc_detach_pre_delif(struct brcmf_pub *drvr)
-{
- struct brcmf_bcdc *bcdc = drvr->proto->pd;
-
- brcmf_fws_detach_pre_delif(bcdc->fws);
-}
-
-void brcmf_proto_bcdc_detach_post_delif(struct brcmf_pub *drvr)
+void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr)
{
struct brcmf_bcdc *bcdc = drvr->proto->pd;
drvr->proto->pd = NULL;
- brcmf_fws_detach_post_delif(bcdc->fws);
+ brcmf_fws_detach(bcdc->fws);
kfree(bcdc);
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
@@ -7,16 +7,14 @@
#ifdef CPTCFG_BRCMFMAC_PROTO_BCDC
int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr);
-void brcmf_proto_bcdc_detach_pre_delif(struct brcmf_pub *drvr);
-void brcmf_proto_bcdc_detach_post_delif(struct brcmf_pub *drvr);
+void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr);
void brcmf_proto_bcdc_txflowblock(struct device *dev, bool state);
void brcmf_proto_bcdc_txcomplete(struct device *dev, struct sk_buff *txp,
bool success);
struct brcmf_fws_info *drvr_to_fws(struct brcmf_pub *drvr);
#else
static inline int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr) { return 0; }
-static void brcmf_proto_bcdc_detach_pre_delif(struct brcmf_pub *drvr) {};
-static inline void brcmf_proto_bcdc_detach_post_delif(struct brcmf_pub *drvr) {}
+static inline void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr) {}
#endif
#endif /* BRCMFMAC_BCDC_H */
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1335,8 +1335,6 @@ void brcmf_detach(struct device *dev)
brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
- brcmf_proto_detach_pre_delif(drvr);
-
/* make sure primary interface removed last */
for (i = BRCMF_MAX_IFS-1; i > -1; i--)
brcmf_remove_interface(drvr->iflist[i], false);
@@ -1346,7 +1344,7 @@ void brcmf_detach(struct device *dev)
brcmf_bus_stop(drvr->bus_if);
- brcmf_proto_detach_post_delif(drvr);
+ brcmf_proto_detach(drvr);
bus_if->drvr = NULL;
wiphy_free(drvr->wiphy);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -2432,25 +2432,17 @@ struct brcmf_fws_info *brcmf_fws_attach(
return fws;
fail:
- brcmf_fws_detach_pre_delif(fws);
- brcmf_fws_detach_post_delif(fws);
+ brcmf_fws_detach(fws);
return ERR_PTR(rc);
}
-void brcmf_fws_detach_pre_delif(struct brcmf_fws_info *fws)
+void brcmf_fws_detach(struct brcmf_fws_info *fws)
{
if (!fws)
return;
- if (fws->fws_wq) {
- destroy_workqueue(fws->fws_wq);
- fws->fws_wq = NULL;
- }
-}
-void brcmf_fws_detach_post_delif(struct brcmf_fws_info *fws)
-{
- if (!fws)
- return;
+ if (fws->fws_wq)
+ destroy_workqueue(fws->fws_wq);
/* cleanup */
brcmf_fws_lock(fws);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
@@ -7,8 +7,7 @@
#define FWSIGNAL_H_
struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr);
-void brcmf_fws_detach_pre_delif(struct brcmf_fws_info *fws);
-void brcmf_fws_detach_post_delif(struct brcmf_fws_info *fws);
+void brcmf_fws_detach(struct brcmf_fws_info *fws);
void brcmf_fws_debugfs_create(struct brcmf_pub *drvr);
bool brcmf_fws_queue_skbs(struct brcmf_fws_info *fws);
bool brcmf_fws_fc_active(struct brcmf_fws_info *fws);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.c
@@ -56,22 +56,16 @@ fail:
return -ENOMEM;
}
-void brcmf_proto_detach_post_delif(struct brcmf_pub *drvr)
+void brcmf_proto_detach(struct brcmf_pub *drvr)
{
brcmf_dbg(TRACE, "Enter\n");
if (drvr->proto) {
if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
- brcmf_proto_bcdc_detach_post_delif(drvr);
+ brcmf_proto_bcdc_detach(drvr);
else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
brcmf_proto_msgbuf_detach(drvr);
kfree(drvr->proto);
drvr->proto = NULL;
}
}
-
-void brcmf_proto_detach_pre_delif(struct brcmf_pub *drvr)
-{
- if (drvr->proto && drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
- brcmf_proto_bcdc_detach_pre_delif(drvr);
-}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
@@ -43,8 +43,7 @@ struct brcmf_proto {
int brcmf_proto_attach(struct brcmf_pub *drvr);
-void brcmf_proto_detach_pre_delif(struct brcmf_pub *drvr);
-void brcmf_proto_detach_post_delif(struct brcmf_pub *drvr);
+void brcmf_proto_detach(struct brcmf_pub *drvr);
static inline int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws,
struct sk_buff *skb,
|
