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From 450914c39f88d1adada26256360dea7050ff4e83 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 3 Sep 2019 06:29:27 +0200
Subject: [PATCH 2/3] brcmfmac: split brcmf_attach() and brcmf_detach()
functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Move code allocating/freeing wiphy out of above functions. This will
allow reinitializing the driver (e.g. on some error) without allocating
a new wiphy.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../broadcom/brcm80211/brcmfmac/bus.h | 4 ++-
.../broadcom/brcm80211/brcmfmac/core.c | 33 ++++++++++++++----
.../broadcom/brcm80211/brcmfmac/pcie.c | 13 +++++--
.../broadcom/brcm80211/brcmfmac/sdio.c | 15 ++++++--
.../broadcom/brcm80211/brcmfmac/usb.c | 34 +++++++++++++++----
5 files changed, 80 insertions(+), 19 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
@@ -253,10 +253,12 @@ void brcmf_rx_frame(struct device *dev,
/* Receive async event packet from firmware. Callee disposes of rxp. */
void brcmf_rx_event(struct device *dev, struct sk_buff *rxp);
+int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings);
/* Indication from bus module regarding presence/insertion of dongle. */
-int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings);
+int brcmf_attach(struct device *dev);
/* Indication from bus module regarding removal/absence of dongle */
void brcmf_detach(struct device *dev);
+void brcmf_free(struct device *dev);
/* Indication from bus module that dongle should be reset */
void brcmf_dev_reset(struct device *dev);
/* Request from bus module to initiate a coredump */
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1230,13 +1230,11 @@ fail:
return ret;
}
-int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
+int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings)
{
struct wiphy *wiphy;
struct cfg80211_ops *ops;
struct brcmf_pub *drvr = NULL;
- int ret = 0;
- int i;
brcmf_dbg(TRACE, "Enter\n");
@@ -1254,6 +1252,21 @@ int brcmf_attach(struct device *dev, str
drvr = wiphy_priv(wiphy);
drvr->wiphy = wiphy;
drvr->ops = ops;
+ drvr->bus_if = dev_get_drvdata(dev);
+ drvr->bus_if->drvr = drvr;
+ drvr->settings = settings;
+
+ return 0;
+}
+
+int brcmf_attach(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_pub *drvr = bus_if->drvr;
+ int ret = 0;
+ int i;
+
+ brcmf_dbg(TRACE, "Enter\n");
for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
@@ -1262,9 +1275,6 @@ int brcmf_attach(struct device *dev, str
/* Link to bus module */
drvr->hdrlen = 0;
- drvr->bus_if = dev_get_drvdata(dev);
- drvr->bus_if->drvr = drvr;
- drvr->settings = settings;
/* Attach and link in the protocol */
ret = brcmf_proto_attach(drvr);
@@ -1280,7 +1290,7 @@ int brcmf_attach(struct device *dev, str
/* attach firmware event handler */
brcmf_fweh_attach(drvr);
- ret = brcmf_bus_started(drvr, ops);
+ ret = brcmf_bus_started(drvr, drvr->ops);
if (ret != 0) {
bphy_err(drvr, "dongle is not responding: err=%d\n", ret);
goto fail;
@@ -1377,6 +1387,15 @@ void brcmf_detach(struct device *dev)
brcmf_cfg80211_detach(drvr->config);
drvr->config = NULL;
}
+}
+
+void brcmf_free(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_pub *drvr = bus_if->drvr;
+
+ if (!drvr)
+ return;
bus_if->drvr = NULL;
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -1430,6 +1430,7 @@ static int brcmf_pcie_reset(struct devic
brcmf_pcie_bus_console_read(devinfo, true);
brcmf_detach(dev);
+ brcmf_free(dev);
brcmf_pcie_release_irq(devinfo);
brcmf_pcie_release_scratchbuffers(devinfo);
@@ -1824,11 +1825,18 @@ static void brcmf_pcie_setup(struct devi
brcmf_pcie_intr_enable(devinfo);
brcmf_pcie_hostready(devinfo);
- if (brcmf_attach(&devinfo->pdev->dev, devinfo->settings) == 0)
- return;
+
+ ret = brcmf_alloc(&devinfo->pdev->dev, devinfo->settings);
+ if (ret)
+ goto fail;
+ ret = brcmf_attach(&devinfo->pdev->dev);
+ if (ret)
+ goto fail;
brcmf_pcie_bus_console_read(devinfo, false);
+ return;
+
fail:
device_release_driver(dev);
}
@@ -1971,6 +1979,7 @@ brcmf_pcie_remove(struct pci_dev *pdev)
brcmf_pcie_intr_disable(devinfo);
brcmf_detach(&pdev->dev);
+ brcmf_free(&pdev->dev);
kfree(bus->bus_priv.pcie);
kfree(bus->msgbuf->flowrings);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -4258,17 +4258,26 @@ static void brcmf_sdio_firmware_callback
sdiod->bus_if->chip = bus->ci->chip;
sdiod->bus_if->chiprev = bus->ci->chiprev;
+ err = brcmf_alloc(sdiod->dev, sdiod->settings);
+ if (err) {
+ brcmf_err("brcmf_alloc failed\n");
+ goto claim;
+ }
+
/* Attach to the common layer, reserve hdr space */
- err = brcmf_attach(sdiod->dev, sdiod->settings);
+ err = brcmf_attach(sdiod->dev);
if (err != 0) {
brcmf_err("brcmf_attach failed\n");
- sdio_claim_host(sdiod->func1);
- goto checkdied;
+ goto free;
}
/* ready */
return;
+free:
+ brcmf_free(sdiod->dev);
+claim:
+ sdio_claim_host(sdiod->func1);
checkdied:
brcmf_sdio_checkdied(bus);
release:
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
@@ -1179,8 +1179,12 @@ static void brcmf_usb_probe_phase2(struc
if (ret)
goto error;
+ ret = brcmf_alloc(devinfo->dev, devinfo->settings);
+ if (ret)
+ goto error;
+
/* Attach to the common driver interface */
- ret = brcmf_attach(devinfo->dev, devinfo->settings);
+ ret = brcmf_attach(devinfo->dev);
if (ret)
goto error;
@@ -1252,7 +1256,10 @@ static int brcmf_usb_probe_cb(struct brc
}
if (!brcmf_usb_dlneeded(devinfo)) {
- ret = brcmf_attach(devinfo->dev, devinfo->settings);
+ ret = brcmf_alloc(devinfo->dev, devinfo->settings);
+ if (ret)
+ goto fail;
+ ret = brcmf_attach(devinfo->dev);
if (ret)
goto fail;
/* we are done */
@@ -1280,6 +1287,7 @@ static int brcmf_usb_probe_cb(struct brc
fail:
/* Release resources in reverse order */
+ brcmf_free(devinfo->dev);
kfree(bus);
brcmf_usb_detach(devinfo);
return ret;
@@ -1293,6 +1301,7 @@ brcmf_usb_disconnect_cb(struct brcmf_usb
brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
brcmf_detach(devinfo->dev);
+ brcmf_free(devinfo->dev);
kfree(devinfo->bus_pub.bus);
brcmf_usb_detach(devinfo);
}
@@ -1436,10 +1445,12 @@ static int brcmf_usb_suspend(struct usb_
brcmf_dbg(USB, "Enter\n");
devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
- if (devinfo->wowl_enabled)
+ if (devinfo->wowl_enabled) {
brcmf_cancel_all_urbs(devinfo);
- else
+ } else {
brcmf_detach(&usb->dev);
+ brcmf_free(&usb->dev);
+ }
return 0;
}
@@ -1452,8 +1463,19 @@ static int brcmf_usb_resume(struct usb_i
struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
brcmf_dbg(USB, "Enter\n");
- if (!devinfo->wowl_enabled)
- return brcmf_attach(devinfo->dev, devinfo->settings);
+ if (!devinfo->wowl_enabled) {
+ int err;
+
+ err = brcmf_alloc(&usb->dev, devinfo->settings);
+ if (err)
+ return err;
+
+ err = brcmf_attach(devinfo->dev);
+ if (err) {
+ brcmf_free(devinfo->dev);
+ return err;
+ }
+ }
devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP;
brcmf_usb_rx_fill_all(devinfo);
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