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mac80211: brcmfmac: really add early fw crash recovery

Browse Source 
Previous commit backported USB fixes instead of firmware crash recovery
patches.

Fixes: 02aed76968 ("mac80211: brcmfmac: early work on FullMAC firmware crash recovery")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2019-04-18 12:37:10 +02:00
parent 02aed76968
commit 2d2e615dee
8 changed files with 605 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
package/kernel/mac80211/patches/450-v5.2-0001-brcmfmac-support-repeated-brcmf_fw_alloc_request-cal.patch Normal file
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@ -0,0 +1,32 @@
From c9692820710f57c826b2e43a6fb1e4cd307508b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 26 Feb 2019 14:11:16 +0100
Subject: [PATCH] brcmfmac: support repeated brcmf_fw_alloc_request() calls
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
During a normal brcmfmac lifetime brcmf_fw_alloc_request() is called
once only during the probe. It's safe to assume provided array is clear.
Further brcmfmac improvements may require calling it multiple times
though. This patch allows it by fixing invalid firmware paths like:
brcm/brcmfmac4366c-pcie.binbrcm/brcmfmac4366c-pcie.bin
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
@@ -743,6 +743,7 @@ brcmf_fw_alloc_request(u32 chip, u32 chi
for (j = 0; j < n_fwnames; j++) {
fwreq->items[j].path = fwnames[j].path;
+ fwnames[j].path[0] = '\0';
/* check if firmware path is provided by module parameter */
if (brcmf_mp_global.firmware_path[0] != '\0') {
strlcpy(fwnames[j].path, mp_path,

79
package/kernel/mac80211/patches/450-v5.2-0002-brcmfmac-add-a-function-designated-for-handling-firm.patch Normal file
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From a2ec87ddbf1637f854ffcfff9d12d392fa30758b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 26 Feb 2019 14:11:18 +0100
Subject: [PATCH] brcmfmac: add a function designated for handling firmware
fails
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This improves handling PCIe firmware halts by printing a clear error
message and replaces a similar code in the SDIO bus support.
It will also allow further improvements like trying to recover from a
firmware crash.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 2 ++
.../net/wireless/broadcom/brcm80211/brcmfmac/core.c | 10 ++++++++++
.../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 2 +-
.../net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 4 ++--
4 files changed, 15 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
@@ -262,6 +262,8 @@ void brcmf_detach(struct device *dev);
void brcmf_dev_reset(struct device *dev);
/* Request from bus module to initiate a coredump */
void brcmf_dev_coredump(struct device *dev);
+/* Indication that firmware has halted or crashed */
+void brcmf_fw_crashed(struct device *dev);
/* Configure the "global" bus state used by upper layers */
void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1294,6 +1294,16 @@ void brcmf_dev_coredump(struct device *d
brcmf_dbg(TRACE, "failed to create coredump\n");
}
+void brcmf_fw_crashed(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_pub *drvr = bus_if->drvr;
+
+ bphy_err(drvr, "Firmware has halted or crashed\n");
+
+ brcmf_dev_coredump(dev);
+}
+
void brcmf_detach(struct device *dev)
{
s32 i;
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -730,7 +730,7 @@ static void brcmf_pcie_handle_mb_data(st
}
if (dtoh_mb_data & BRCMF_D2H_DEV_FWHALT) {
brcmf_dbg(PCIE, "D2H_MB_DATA: FW HALT\n");
- brcmf_dev_coredump(&devinfo->pdev->dev);
+ brcmf_fw_crashed(&devinfo->pdev->dev);
}
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -1090,8 +1090,8 @@ static u32 brcmf_sdio_hostmail(struct br
/* dongle indicates the firmware has halted/crashed */
if (hmb_data & HMB_DATA_FWHALT) {
- brcmf_err("mailbox indicates firmware halted\n");
- brcmf_dev_coredump(&sdiod->func1->dev);
+ brcmf_dbg(SDIO, "mailbox indicates firmware halted\n");
+ brcmf_fw_crashed(&sdiod->func1->dev);
}
/* Dongle recomposed rx frames, accept them again */

153
package/kernel/mac80211/patches/450-v5.2-0003-brcmfmac-reset-PCIe-bus-on-a-firmware-crash.patch Normal file
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@ -0,0 +1,153 @@
From 4684997d9eea29380000e062755aa6d368d789a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 26 Feb 2019 14:11:19 +0100
Subject: [PATCH] brcmfmac: reset PCIe bus on a firmware crash
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This includes bus reset & reloading a firmware. It should be sufficient
for a user space to (setup and) use a wireless device again.
Support for reset on USB & SDIO can be added later.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../broadcom/brcm80211/brcmfmac/bus.h | 10 ++++++
.../broadcom/brcm80211/brcmfmac/core.c | 12 +++++++
.../broadcom/brcm80211/brcmfmac/core.h | 2 ++
.../broadcom/brcm80211/brcmfmac/pcie.c | 35 +++++++++++++++++++
4 files changed, 59 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
@@ -90,6 +90,7 @@ struct brcmf_bus_ops {
int (*get_memdump)(struct device *dev, void *data, size_t len);
int (*get_fwname)(struct device *dev, const char *ext,
unsigned char *fw_name);
+ int (*reset)(struct device *dev);
};
@@ -235,6 +236,15 @@ int brcmf_bus_get_fwname(struct brcmf_bu
return bus->ops->get_fwname(bus->dev, ext, fw_name);
}
+static inline
+int brcmf_bus_reset(struct brcmf_bus *bus)
+{
+ if (!bus->ops->reset)
+ return -EOPNOTSUPP;
+
+ return bus->ops->reset(bus->dev);
+}
+
/*
* interface functions from common layer
*/
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1104,6 +1104,14 @@ static int brcmf_revinfo_read(struct seq
return 0;
}
+static void brcmf_core_bus_reset(struct work_struct *work)
+{
+ struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
+ bus_reset);
+
+ brcmf_bus_reset(drvr->bus_if);
+}
+
static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
{
int ret = -1;
@@ -1175,6 +1183,8 @@ static int brcmf_bus_started(struct brcm
#endif
#endif /* CONFIG_INET */
+ INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset);
+
/* populate debugfs */
brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
brcmf_feat_debugfs_create(drvr);
@@ -1300,6 +1310,8 @@ void brcmf_fw_crashed(struct device *dev
bphy_err(drvr, "Firmware has halted or crashed\n");
brcmf_dev_coredump(dev);
+
+ schedule_work(&drvr->bus_reset);
}
void brcmf_detach(struct device *dev)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
@@ -143,6 +143,8 @@ struct brcmf_pub {
struct notifier_block inet6addr_notifier;
struct brcmf_mp_device *settings;
+ struct work_struct bus_reset;
+
u8 clmver[BRCMF_DCMD_SMLEN];
};
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -345,6 +345,10 @@ static const u32 brcmf_ring_itemsize[BRC
BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE
};
+static void brcmf_pcie_setup(struct device *dev, int ret,
+ struct brcmf_fw_request *fwreq);
+static struct brcmf_fw_request *
+brcmf_pcie_prepare_fw_request(struct brcmf_pciedev_info *devinfo);
static u32
brcmf_pcie_read_reg32(struct brcmf_pciedev_info *devinfo, u32 reg_offset)
@@ -1409,6 +1413,36 @@ int brcmf_pcie_get_fwname(struct device
return 0;
}
+static int brcmf_pcie_reset(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_pciedev *buspub = bus_if->bus_priv.pcie;
+ struct brcmf_pciedev_info *devinfo = buspub->devinfo;
+ struct brcmf_fw_request *fwreq;
+ int err;
+
+ brcmf_detach(dev);
+
+ brcmf_pcie_release_irq(devinfo);
+ brcmf_pcie_release_scratchbuffers(devinfo);
+ brcmf_pcie_release_ringbuffers(devinfo);
+ brcmf_pcie_reset_device(devinfo);
+
+ fwreq = brcmf_pcie_prepare_fw_request(devinfo);
+ if (!fwreq) {
+ dev_err(dev, "Failed to prepare FW request\n");
+ return -ENOMEM;
+ }
+
+ err = brcmf_fw_get_firmwares(dev, fwreq, brcmf_pcie_setup);
+ if (err) {
+ dev_err(dev, "Failed to prepare FW request\n");
+ kfree(fwreq);
+ }
+
+ return err;
+}
+
static const struct brcmf_bus_ops brcmf_pcie_bus_ops = {
.txdata = brcmf_pcie_tx,
.stop = brcmf_pcie_down,
@@ -1418,6 +1452,7 @@ static const struct brcmf_bus_ops brcmf_
.get_ramsize = brcmf_pcie_get_ramsize,
.get_memdump = brcmf_pcie_get_memdump,
.get_fwname = brcmf_pcie_get_fwname,
+ .reset = brcmf_pcie_reset,
};

124
package/kernel/mac80211/patches/451-v5.2-0001-brcmfmac-fix-WARNING-during-USB-disconnect-in-case-o.patch Normal file
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@ -0,0 +1,124 @@
From c80d26e81ef1802f30364b4ad1955c1443a592b9 Mon Sep 17 00:00:00 2001
From: Piotr Figiel <p.figiel@camlintechnologies.com>
Date: Mon, 4 Mar 2019 15:42:49 +0000
Subject: [PATCH] brcmfmac: fix WARNING during USB disconnect in case of
unempty psq
brcmu_pkt_buf_free_skb emits WARNING when attempting to free a sk_buff
which is part of any queue. After USB disconnect this may have happened
when brcmf_fws_hanger_cleanup() is called as per-interface psq was never
cleaned when removing the interface.
Change brcmf_fws_macdesc_cleanup() in a way that it removes the
corresponding packets from hanger table (to avoid double-free when
brcmf_fws_hanger_cleanup() is called) and add a call to clean-up the
interface specific packet queue.
Below is a WARNING during USB disconnect with Raspberry Pi WiFi dongle
running in AP mode. This was reproducible when the interface was
transmitting during the disconnect and is fixed with this commit.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1171 at drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c:49 brcmu_pkt_buf_free_skb+0x3c/0x40
Modules linked in: nf_log_ipv4 nf_log_common xt_LOG xt_limit iptable_mangle xt_connmark xt_tcpudp xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter ip_tables x_tables usb_f_mass_storage usb_f_rndis u_ether cdc_acm smsc95xx usbnet ci_hdrc_imx ci_hdrc ulpi usbmisc_imx 8250_exar 8250_pci 8250 8250_base libcomposite configfs udc_core
CPU: 0 PID: 1171 Comm: kworker/0:0 Not tainted 4.19.23-00075-gde33ed8 #99
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Workqueue: usb_hub_wq hub_event
[<8010ff84>] (unwind_backtrace) from [<8010bb64>] (show_stack+0x10/0x14)
[<8010bb64>] (show_stack) from [<80840278>] (dump_stack+0x88/0x9c)
[<80840278>] (dump_stack) from [<8011f5ec>] (__warn+0xfc/0x114)
[<8011f5ec>] (__warn) from [<8011f71c>] (warn_slowpath_null+0x40/0x48)
[<8011f71c>] (warn_slowpath_null) from [<805a476c>] (brcmu_pkt_buf_free_skb+0x3c/0x40)
[<805a476c>] (brcmu_pkt_buf_free_skb) from [<805bb6c4>] (brcmf_fws_cleanup+0x1e4/0x22c)
[<805bb6c4>] (brcmf_fws_cleanup) from [<805bc854>] (brcmf_fws_del_interface+0x58/0x68)
[<805bc854>] (brcmf_fws_del_interface) from [<805b66ac>] (brcmf_remove_interface+0x40/0x150)
[<805b66ac>] (brcmf_remove_interface) from [<805b6870>] (brcmf_detach+0x6c/0xb0)
[<805b6870>] (brcmf_detach) from [<805bdbb8>] (brcmf_usb_disconnect+0x30/0x4c)
[<805bdbb8>] (brcmf_usb_disconnect) from [<805e5d64>] (usb_unbind_interface+0x5c/0x1e0)
[<805e5d64>] (usb_unbind_interface) from [<804aab10>] (device_release_driver_internal+0x154/0x1ec)
[<804aab10>] (device_release_driver_internal) from [<804a97f4>] (bus_remove_device+0xcc/0xf8)
[<804a97f4>] (bus_remove_device) from [<804a6fc0>] (device_del+0x118/0x308)
[<804a6fc0>] (device_del) from [<805e488c>] (usb_disable_device+0xa0/0x1c8)
[<805e488c>] (usb_disable_device) from [<805dcf98>] (usb_disconnect+0x70/0x1d8)
[<805dcf98>] (usb_disconnect) from [<805ddd84>] (hub_event+0x464/0xf50)
[<805ddd84>] (hub_event) from [<80135a70>] (process_one_work+0x138/0x3f8)
[<80135a70>] (process_one_work) from [<80135d5c>] (worker_thread+0x2c/0x554)
[<80135d5c>] (worker_thread) from [<8013b1a0>] (kthread+0x124/0x154)
[<8013b1a0>] (kthread) from [<801010e8>] (ret_from_fork+0x14/0x2c)
Exception stack(0xecf8dfb0 to 0xecf8dff8)
dfa0: 00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
---[ end trace 38d234018e9e2a90 ]---
------------[ cut here ]------------
Signed-off-by: Piotr Figiel <p.figiel@camlintechnologies.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../broadcom/brcm80211/brcmfmac/fwsignal.c | 42 +++++++++++--------
1 file changed, 24 insertions(+), 18 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -580,24 +580,6 @@ static bool brcmf_fws_ifidx_match(struct
return ifidx == *(int *)arg;
}
-static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q,
- int ifidx)
-{
- bool (*matchfn)(struct sk_buff *, void *) = NULL;
- struct sk_buff *skb;
- int prec;
-
- if (ifidx != -1)
- matchfn = brcmf_fws_ifidx_match;
- for (prec = 0; prec < q->num_prec; prec++) {
- skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
- while (skb) {
- brcmu_pkt_buf_free_skb(skb);
- skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
- }
- }
-}
-
static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
{
int i;
@@ -669,6 +651,28 @@ static inline int brcmf_fws_hanger_poppk
return 0;
}
+static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q,
+ int ifidx)
+{
+ bool (*matchfn)(struct sk_buff *, void *) = NULL;
+ struct sk_buff *skb;
+ int prec;
+ u32 hslot;
+
+ if (ifidx != -1)
+ matchfn = brcmf_fws_ifidx_match;
+ for (prec = 0; prec < q->num_prec; prec++) {
+ skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
+ while (skb) {
+ hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
+ brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
+ true);
+ brcmu_pkt_buf_free_skb(skb);
+ skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
+ }
+ }
+}
+
static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
u32 slot_id)
{
@@ -2200,6 +2204,8 @@ void brcmf_fws_del_interface(struct brcm
brcmf_fws_lock(fws);
ifp->fws_desc = NULL;
brcmf_dbg(TRACE, "deleting %s\n", entry->name);
+ brcmf_fws_macdesc_cleanup(fws, &fws->desc.iface[ifp->ifidx],
+ ifp->ifidx);
brcmf_fws_macdesc_deinit(entry);
brcmf_fws_cleanup(fws, ifp->ifidx);
brcmf_fws_unlock(fws);

217
package/kernel/mac80211/patches/451-v5.2-0002-brcmfmac-fix-NULL-pointer-derefence-during-USB-disco.patch Normal file
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@ -0,0 +1,217 @@
From 5cdb0ef6144f47440850553579aa923c20a63f23 Mon Sep 17 00:00:00 2001
From: Piotr Figiel <p.figiel@camlintechnologies.com>
Date: Mon, 4 Mar 2019 15:42:52 +0000
Subject: [PATCH] brcmfmac: fix NULL pointer derefence during USB disconnect
In case USB disconnect happens at the moment transmitting workqueue is in
progress the underlying interface may be gone causing a NULL pointer
dereference. Add synchronization of the workqueue destruction with the
detach implementation in core so that the transmitting workqueue is stopped
during detach before the interfaces are removed.
Fix following Oops:
Unable to handle kernel NULL pointer dereference at virtual address 00000008
pgd = 9e6a802d
[00000008] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP ARM
Modules linked in: nf_log_ipv4 nf_log_common xt_LOG xt_limit iptable_mangle
xt_connmark xt_tcpudp xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
iptable_filter ip_tables x_tables usb_f_mass_storage usb_f_rndis u_ether
usb_serial_simple usbserial cdc_acm brcmfmac brcmutil smsc95xx usbnet
ci_hdrc_imx ci_hdrc ulpi usbmisc_imx 8250_exar 8250_pci 8250 8250_base
libcomposite configfs udc_core
CPU: 0 PID: 7 Comm: kworker/u8:0 Not tainted 4.19.23-00076-g03740aa-dirty #102
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Workqueue: brcmf_fws_wq brcmf_fws_dequeue_worker [brcmfmac]
PC is at brcmf_txfinalize+0x34/0x90 [brcmfmac]
LR is at brcmf_fws_dequeue_worker+0x218/0x33c [brcmfmac]
pc : [<7f0dee64>] lr : [<7f0e4140>] psr: 60010093
sp : ee8abef0 ip : 00000000 fp : edf38000
r10: ffffffed r9 : edf38970 r8 : edf38004
r7 : edf3e970 r6 : 00000000 r5 : ede69000 r4 : 00000000
r3 : 00000a97 r2 : 00000000 r1 : 0000888e r0 : ede69000
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
Control: 10c5387d Table: 7d03c04a DAC: 00000051
Process kworker/u8:0 (pid: 7, stack limit = 0x24ec3e04)
Stack: (0xee8abef0 to 0xee8ac000)
bee0: ede69000 00000000 ed56c3e0 7f0e4140
bf00: 00000001 00000000 edf38004 edf3e99c ed56c3e0 80d03d00 edfea43a edf3e970
bf20: ee809880 ee804200 ee971100 00000000 edf3e974 00000000 ee804200 80135a70
bf40: 80d03d00 ee804218 ee809880 ee809894 ee804200 80d03d00 ee804218 ee8aa000
bf60: 00000088 80135d5c 00000000 ee829f00 ee829dc0 00000000 ee809880 80135d30
bf80: ee829f1c ee873eac 00000000 8013b1a0 ee829dc0 8013b07c 00000000 00000000
bfa0: 00000000 00000000 00000000 801010e8 00000000 00000000 00000000 00000000
bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[<7f0dee64>] (brcmf_txfinalize [brcmfmac]) from [<7f0e4140>] (brcmf_fws_dequeue_worker+0x218/0x33c [brcmfmac])
[<7f0e4140>] (brcmf_fws_dequeue_worker [brcmfmac]) from [<80135a70>] (process_one_work+0x138/0x3f8)
[<80135a70>] (process_one_work) from [<80135d5c>] (worker_thread+0x2c/0x554)
[<80135d5c>] (worker_thread) from [<8013b1a0>] (kthread+0x124/0x154)
[<8013b1a0>] (kthread) from [<801010e8>] (ret_from_fork+0x14/0x2c)
Exception stack(0xee8abfb0 to 0xee8abff8)
bfa0: 00000000 00000000 00000000 00000000
bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Code: e1530001 0a000007 e3560000 e1a00005 (05942008)
---[ end trace 079239dd31c86e90 ]---
Signed-off-by: Piotr Figiel <p.figiel@camlintechnologies.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, 40 insertions(+), 13 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -490,11 +490,18 @@ fail:
return -ENOMEM;
}
-void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr)
+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)
{
struct brcmf_bcdc *bcdc = drvr->proto->pd;
drvr->proto->pd = NULL;
- brcmf_fws_detach(bcdc->fws);
+ brcmf_fws_detach_post_delif(bcdc->fws);
kfree(bcdc);
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
@@ -18,14 +18,16 @@
#ifdef CPTCFG_BRCMFMAC_PROTO_BCDC
int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr);
-void brcmf_proto_bcdc_detach(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_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 inline void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr) {}
+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) {}
#endif
#endif /* BRCMFMAC_BCDC_H */
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1342,6 +1342,8 @@ 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);
@@ -1351,7 +1353,7 @@ void brcmf_detach(struct device *dev)
brcmf_bus_stop(drvr->bus_if);
- brcmf_proto_detach(drvr);
+ brcmf_proto_detach_post_delif(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
@@ -2443,17 +2443,25 @@ struct brcmf_fws_info *brcmf_fws_attach(
return fws;
fail:
- brcmf_fws_detach(fws);
+ brcmf_fws_detach_pre_delif(fws);
+ brcmf_fws_detach_post_delif(fws);
return ERR_PTR(rc);
}
-void brcmf_fws_detach(struct brcmf_fws_info *fws)
+void brcmf_fws_detach_pre_delif(struct brcmf_fws_info *fws)
{
if (!fws)
return;
-
- if (fws->fws_wq)
+ 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;
/* cleanup */
brcmf_fws_lock(fws);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
@@ -19,7 +19,8 @@
#define FWSIGNAL_H_
struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr);
-void brcmf_fws_detach(struct brcmf_fws_info *fws);
+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_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
@@ -67,16 +67,22 @@ fail:
return -ENOMEM;
}
-void brcmf_proto_detach(struct brcmf_pub *drvr)
+void brcmf_proto_detach_post_delif(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(drvr);
+ brcmf_proto_bcdc_detach_post_delif(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
@@ -54,7 +54,8 @@ struct brcmf_proto {
int brcmf_proto_attach(struct brcmf_pub *drvr);
-void brcmf_proto_detach(struct brcmf_pub *drvr);
+void brcmf_proto_detach_pre_delif(struct brcmf_pub *drvr);
+void brcmf_proto_detach_post_delif(struct brcmf_pub *drvr);
static inline int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws,
struct sk_buff *skb,

0
package/kernel/mac80211/patches/450-v5.2-0001-brcmfmac-fix-race-during-disconnect-when-USB-complet.patch → package/kernel/mac80211/patches/452-v5.2-0001-brcmfmac-fix-race-during-disconnect-when-USB-complet.patch
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0
package/kernel/mac80211/patches/450-v5.2-0002-brcmfmac-remove-pending-parameter-from-brcmf_usb_fre.patch → package/kernel/mac80211/patches/452-v5.2-0002-brcmfmac-remove-pending-parameter-from-brcmf_usb_fre.patch
View File

0
package/kernel/mac80211/patches/450-v5.2-0003-brcmfmac-remove-unused-variable-i-from-brcmf_usb_fre.patch → package/kernel/mac80211/patches/452-v5.2-0003-brcmfmac-remove-unused-variable-i-from-brcmf_usb_fre.patch
View File