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mac80211: brcmfmac: backport important changes from the 4.18

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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
2018-08-16 11:26:10 +02:00
parent 84ef414bd4
commit 9d8940c5b9
9 changed files with 393 additions and 2 deletions
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2
package/kernel/mac80211/Makefile
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@@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mac80211 PKG_NAME:=mac80211
PKG_VERSION:=2017-01-31 PKG_VERSION:=2017-01-31
PKG_RELEASE:=11 PKG_RELEASE:=12
PKG_SOURCE_URL:=http://mirror2.openwrt.org/sources PKG_SOURCE_URL:=http://mirror2.openwrt.org/sources
PKG_BACKPORT_VERSION:= PKG_BACKPORT_VERSION:=
PKG_HASH:=75e6d39e34cf156212a2509172a4a62b673b69eb4a1d9aaa565f7fa719fa2317 PKG_HASH:=75e6d39e34cf156212a2509172a4a62b673b69eb4a1d9aaa565f7fa719fa2317

97
package/kernel/mac80211/patches/331-v4.18-0002-brcmfmac-coarse-support-for-PCIe-shared-structure-re.patch Normal file
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@@ -0,0 +1,97 @@
From f56324baf329bc9362a52ad77a4a1a0f3356d1bc Mon Sep 17 00:00:00 2001
From: Franky Lin <franky.lin@broadcom.com>
Date: Thu, 26 Apr 2018 12:16:51 +0200
Subject: [PATCH] brcmfmac: coarse support for PCIe shared structure rev7
Revision 7 of PCIe dongle interface increases the item size of tx and rx
complete rings to accommodate extra payload for new feature. This patch
simply bump up the size of these two rings without adding the support
for utilizing the new space. This makes brcmfmac compatible with rev7
firmware.
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../wireless/broadcom/brcm80211/brcmfmac/msgbuf.h | 6 ++++--
.../wireless/broadcom/brcm80211/brcmfmac/pcie.c | 23 ++++++++++++++++++----
2 files changed, 23 insertions(+), 6 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.h
@@ -27,8 +27,10 @@
#define BRCMF_H2D_MSGRING_CONTROL_SUBMIT_ITEMSIZE 40
#define BRCMF_H2D_MSGRING_RXPOST_SUBMIT_ITEMSIZE 32
#define BRCMF_D2H_MSGRING_CONTROL_COMPLETE_ITEMSIZE 24
-#define BRCMF_D2H_MSGRING_TX_COMPLETE_ITEMSIZE 16
-#define BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE 32
+#define BRCMF_D2H_MSGRING_TX_COMPLETE_ITEMSIZE_PRE_V7 16
+#define BRCMF_D2H_MSGRING_TX_COMPLETE_ITEMSIZE 24
+#define BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE_PRE_V7 32
+#define BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE 40
#define BRCMF_H2D_TXFLOWRING_ITEMSIZE 48
struct msgbuf_buf_addr {
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -135,8 +135,9 @@ static struct brcmf_firmware_mapping brc
BRCMF_PCIE_MB_INT_D2H3_DB0 | \
BRCMF_PCIE_MB_INT_D2H3_DB1)
+#define BRCMF_PCIE_SHARED_VERSION_7 7
#define BRCMF_PCIE_MIN_SHARED_VERSION 5
-#define BRCMF_PCIE_MAX_SHARED_VERSION 6
+#define BRCMF_PCIE_MAX_SHARED_VERSION BRCMF_PCIE_SHARED_VERSION_7
#define BRCMF_PCIE_SHARED_VERSION_MASK 0x00FF
#define BRCMF_PCIE_SHARED_DMA_INDEX 0x10000
#define BRCMF_PCIE_SHARED_DMA_2B_IDX 0x100000
@@ -316,6 +317,14 @@ static const u32 brcmf_ring_max_item[BRC
BRCMF_D2H_MSGRING_RX_COMPLETE_MAX_ITEM
};
+static const u32 brcmf_ring_itemsize_pre_v7[BRCMF_NROF_COMMON_MSGRINGS] = {
+ BRCMF_H2D_MSGRING_CONTROL_SUBMIT_ITEMSIZE,
+ BRCMF_H2D_MSGRING_RXPOST_SUBMIT_ITEMSIZE,
+ BRCMF_D2H_MSGRING_CONTROL_COMPLETE_ITEMSIZE,
+ BRCMF_D2H_MSGRING_TX_COMPLETE_ITEMSIZE_PRE_V7,
+ BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE_PRE_V7
+};
+
static const u32 brcmf_ring_itemsize[BRCMF_NROF_COMMON_MSGRINGS] = {
BRCMF_H2D_MSGRING_CONTROL_SUBMIT_ITEMSIZE,
BRCMF_H2D_MSGRING_RXPOST_SUBMIT_ITEMSIZE,
@@ -999,8 +1008,14 @@ brcmf_pcie_alloc_dma_and_ring(struct brc
struct brcmf_pcie_ringbuf *ring;
u32 size;
u32 addr;
+ const u32 *ring_itemsize_array;
+
+ if (devinfo->shared.version < BRCMF_PCIE_SHARED_VERSION_7)
+ ring_itemsize_array = brcmf_ring_itemsize_pre_v7;
+ else
+ ring_itemsize_array = brcmf_ring_itemsize;
- size = brcmf_ring_max_item[ring_id] * brcmf_ring_itemsize[ring_id];
+ size = brcmf_ring_max_item[ring_id] * ring_itemsize_array[ring_id];
dma_buf = brcmf_pcie_init_dmabuffer_for_device(devinfo, size,
tcm_ring_phys_addr + BRCMF_RING_MEM_BASE_ADDR_OFFSET,
&dma_handle);
@@ -1010,7 +1025,7 @@ brcmf_pcie_alloc_dma_and_ring(struct brc
addr = tcm_ring_phys_addr + BRCMF_RING_MAX_ITEM_OFFSET;
brcmf_pcie_write_tcm16(devinfo, addr, brcmf_ring_max_item[ring_id]);
addr = tcm_ring_phys_addr + BRCMF_RING_LEN_ITEMS_OFFSET;
- brcmf_pcie_write_tcm16(devinfo, addr, brcmf_ring_itemsize[ring_id]);
+ brcmf_pcie_write_tcm16(devinfo, addr, ring_itemsize_array[ring_id]);
ring = kzalloc(sizeof(*ring), GFP_KERNEL);
if (!ring) {
@@ -1019,7 +1034,7 @@ brcmf_pcie_alloc_dma_and_ring(struct brc
return NULL;
}
brcmf_commonring_config(&ring->commonring, brcmf_ring_max_item[ring_id],
- brcmf_ring_itemsize[ring_id], dma_buf);
+ ring_itemsize_array[ring_id], dma_buf);
ring->dma_handle = dma_handle;
ring->devinfo = devinfo;
brcmf_commonring_register_cb(&ring->commonring,

45
package/kernel/mac80211/patches/331-v4.18-0003-brcmfmac-Add-support-for-bcm43364-wireless-chipset.patch Normal file
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@@ -0,0 +1,45 @@
From 9c4a121e82634aa000a702c98cd6f05b27d6e186 Mon Sep 17 00:00:00 2001
From: Sean Lanigan <sean@lano.id.au>
Date: Fri, 4 May 2018 16:48:23 +1000
Subject: [PATCH] brcmfmac: Add support for bcm43364 wireless chipset
Add support for the BCM43364 chipset via an SDIO interface, as used in
e.g. the Murata 1FX module.
The BCM43364 uses the same firmware as the BCM43430 (which is already
included), the only difference is the omission of Bluetooth.
However, the SDIO_ID for the BCM43364 is 02D0:A9A4, giving it a MODALIAS
of sdio:c00v02D0dA9A4, which doesn't get recognised and hence doesn't
load the brcmfmac module. Adding the 'A9A4' ID in the appropriate place
triggers the brcmfmac driver to load, and then correctly use the
firmware file 'brcmfmac43430-sdio.bin'.
Signed-off-by: Sean Lanigan <sean@lano.id.au>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
include/linux/mmc/sdio_ids.h | 1 +
2 files changed, 2 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -1097,6 +1097,7 @@ static const struct sdio_device_id brcmf
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
+ BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43364),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4339),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
--- a/include/linux/mmc/sdio_ids.h
+++ b/include/linux/mmc/sdio_ids.h
@@ -34,6 +34,7 @@
#define SDIO_DEVICE_ID_BROADCOM_4335_4339 0x4335
#define SDIO_DEVICE_ID_BROADCOM_4339 0x4339
#define SDIO_DEVICE_ID_BROADCOM_43362 0xa962
+#define SDIO_DEVICE_ID_BROADCOM_43364 0xa9a4
#define SDIO_DEVICE_ID_BROADCOM_43430 0xa9a6
#define SDIO_DEVICE_ID_BROADCOM_4345 0x4345
#define SDIO_DEVICE_ID_BROADCOM_43455 0xa9bf

75
package/kernel/mac80211/patches/331-v4.18-0004-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch Normal file
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@@ -0,0 +1,75 @@
From 88001968245c42c26416476bf0ef960442371605 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Mon, 14 May 2018 08:48:20 +0200
Subject: [PATCH] brcmfmac: add debugfs entry for reading firmware capabilities
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This allows reading all capabilities as reported by a firmware. They are
printed using native (raw) names, just like developers like it the most.
It's how firmware reports support for various features, e.g. supported
modes, supported standards, power saving details, max BSS-es.
Access to all that info is useful for trying new firmwares, comparing
them and debugging features AKA bugs.
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>
---
.../wireless/broadcom/brcm80211/brcmfmac/feature.c | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
@@ -138,6 +138,41 @@ static void brcmf_feat_firmware_capabili
}
}
+/**
+ * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.
+ *
+ * @seq: sequence for debugfs entry.
+ * @data: raw data pointer.
+ */
+static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
+ struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0);
+ char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };
+ char *tmp;
+ int err;
+
+ err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
+ if (err) {
+ brcmf_err("could not get firmware cap (%d)\n", err);
+ return err;
+ }
+
+ /* Put every capability in a new line */
+ for (tmp = caps; *tmp; tmp++) {
+ if (*tmp == ' ')
+ *tmp = '\n';
+ }
+
+ /* Usually there is a space at the end of capabilities string */
+ seq_printf(seq, "%s", caps);
+ /* So make sure we don't print two line breaks */
+ if (tmp > caps && *(tmp - 1) != '\n')
+ seq_printf(seq, "\n");
+
+ return 0;
+}
+
void brcmf_feat_attach(struct brcmf_pub *drvr)
{
struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
@@ -196,6 +231,7 @@ void brcmf_feat_attach(struct brcmf_pub
}
brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
+ brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);
}
bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)

74
package/kernel/mac80211/patches/331-v4.18-0005-brcmfmac-add-support-for-sysfs-initiated-coredump.patch Normal file
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@@ -0,0 +1,74 @@
From 8e072168f75ebce85b96cbcefea2b10ddbd5913f Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Wed, 16 May 2018 14:11:59 +0200
Subject: [PATCH] brcmfmac: add support for sysfs initiated coredump
The driver already supports device coredump initiated by firmware
event. Since commit 3c47d19ff4dc ("drivers: base: add coredump driver
ops") it is also possible to initiate it from user-space through
sysfs. This patch adds support for SDIO and PCIe devices.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 2 ++
drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 8 ++++++++
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 1 +
4 files changed, 12 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -1299,6 +1299,9 @@ static struct sdio_driver brcmf_sdmmc_dr
#ifdef CONFIG_PM_SLEEP
.pm = &brcmf_sdio_pm_ops,
#endif /* CONFIG_PM_SLEEP */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
+ .coredump = brcmf_dev_coredump,
+#endif
},
};
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
@@ -231,6 +231,8 @@ void brcmf_detach(struct device *dev);
void brcmf_dev_reset(struct device *dev);
/* Indication from bus module to change flow-control state */
void brcmf_txflowblock(struct device *dev, bool state);
+/* Request from bus module to initiate a coredump */
+void brcmf_dev_coredump(struct device *dev);
/* Notify the bus has transferred the tx packet to firmware */
void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1159,6 +1159,14 @@ void brcmf_dev_reset(struct device *dev)
brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
}
+void brcmf_dev_coredump(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+
+ if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)
+ brcmf_dbg(TRACE, "failed to create coredump\n");
+}
+
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
@@ -1995,6 +1995,9 @@ static struct pci_driver brcmf_pciedrvr
#ifdef CONFIG_PM
.driver.pm = &brcmf_pciedrvr_pm,
#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
+ .driver.coredump = brcmf_dev_coredump,
+#endif
};

32
package/kernel/mac80211/patches/331-v4.18-0006-brcmfmac-validate-user-provided-data-for-memdump-bef.patch Normal file
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@@ -0,0 +1,32 @@
From d2af9b566554e01f9ad67b330ce569dbc130e5d3 Mon Sep 17 00:00:00 2001
From: Franky Lin <franky.lin@broadcom.com>
Date: Wed, 16 May 2018 14:12:01 +0200
Subject: [PATCH] brcmfmac: validate user provided data for memdump before
copying
In patch "brcmfmac: add support for sysfs initiated coredump", a new
scenario of brcmf_debug_create_memdump was added in which the user of
the function might not necessarily provide prefix data. Hence the
function should not assume the data is always valid and should perform a
check before copying.
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
@@ -42,7 +42,8 @@ int brcmf_debug_create_memdump(struct br
if (!dump)
return -ENOMEM;
- memcpy(dump, data, len);
+ if (data && len > 0)
+ memcpy(dump, data, len);
err = brcmf_bus_get_memdump(bus, dump + len, ramsize);
if (err) {
vfree(dump);

38
package/kernel/mac80211/patches/331-v4.18-0007-brcmfmac-trigger-memory-dump-upon-firmware-halt-sign.patch Normal file
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@@ -0,0 +1,38 @@
From 8a3ab2f38f1669e3be6433a1f6b82a077b38c4c7 Mon Sep 17 00:00:00 2001
From: Franky Lin <franky.lin@broadcom.com>
Date: Wed, 16 May 2018 14:12:02 +0200
Subject: [PATCH] brcmfmac: trigger memory dump upon firmware halt signal
PCIe dongle firmware signals a halt/trap through mailbox interrupt.
Trigger a memory dump upon receiving such signal could help to provide
useful information for issue debug.
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -180,6 +180,7 @@ static struct brcmf_firmware_mapping brc
#define BRCMF_D2H_DEV_D3_ACK 0x00000001
#define BRCMF_D2H_DEV_DS_ENTER_REQ 0x00000002
#define BRCMF_D2H_DEV_DS_EXIT_NOTE 0x00000004
+#define BRCMF_D2H_DEV_FWHALT 0x10000000
#define BRCMF_H2D_HOST_D3_INFORM 0x00000001
#define BRCMF_H2D_HOST_DS_ACK 0x00000002
@@ -715,6 +716,10 @@ static void brcmf_pcie_handle_mb_data(st
devinfo->mbdata_completed = true;
wake_up(&devinfo->mbdata_resp_wait);
}
+ if (dtoh_mb_data & BRCMF_D2H_DEV_FWHALT) {
+ brcmf_dbg(PCIE, "D2H_MB_DATA: FW HALT\n");
+ brcmf_dev_coredump(&devinfo->pdev->dev);
+ }
}

30
package/kernel/mac80211/patches/331-v4.18-0008-brcmfmac-trigger-memory-dump-on-SDIO-firmware-halt-m.patch Normal file
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@@ -0,0 +1,30 @@
From b8248236e92790ac635caeb4156e46ea2417e037 Mon Sep 17 00:00:00 2001
From: Franky Lin <franky.lin@broadcom.com>
Date: Wed, 16 May 2018 14:12:03 +0200
Subject: [PATCH] brcmfmac: trigger memory dump on SDIO firmware halt message
Attempt to dump dongle memory for debug upon receiving firmware halt
message through dongle to host mail box interrupt.
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -1095,8 +1095,10 @@ static u32 brcmf_sdio_hostmail(struct br
bus->sdcnt.f1regdata += 2;
/* dongle indicates the firmware has halted/crashed */
- if (hmb_data & HMB_DATA_FWHALT)
+ if (hmb_data & HMB_DATA_FWHALT) {
brcmf_err("mailbox indicates firmware halted\n");
+ brcmf_dev_coredump(&sdiod->func1->dev);
+ }
/* Dongle recomposed rx frames, accept them again */
if (hmb_data & HMB_DATA_NAKHANDLED) {

2
package/kernel/mac80211/patches/860-brcmfmac-register-wiphy-s-during-module_init.patch
View File

@@ -13,7 +13,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1268,6 +1268,7 @@ int __init brcmf_core_init(void) @@ -1276,6 +1276,7 @@ int __init brcmf_core_init(void)
{ {
if (!schedule_work(&brcmf_driver_work)) if (!schedule_work(&brcmf_driver_work))
return -EBUSY; return -EBUSY;