Commit 81d5f1bb authored by Arend van Spriel's avatar Arend van Spriel Committed by John W. Linville
Browse files

brcmfmac: assure USB dongle firmware is reset upon module unload



Upon unloading the brcmfmac module the USB firmware should be reset
as the device remains powered. The reset assures a known device
state when a new brcmfmac driver load is being done.
Reviewed-by: default avatarPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: default avatarHante Meuleman <meuleman@broadcom.com>
Signed-off-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent ac744395
......@@ -39,6 +39,7 @@
#define BRCMF_C_GET_BSSID 23
#define BRCMF_C_GET_SSID 25
#define BRCMF_C_SET_SSID 26
#define BRCMF_C_TERMINATED 28
#define BRCMF_C_GET_CHANNEL 29
#define BRCMF_C_SET_CHANNEL 30
#define BRCMF_C_GET_SRL 31
......
......@@ -154,7 +154,8 @@ static inline void brcmf_rx_packet(struct device *dev, int ifidx,
extern int brcmf_attach(uint bus_hdrlen, struct device *dev);
/* Indication from bus module regarding removal/absence of dongle */
extern void brcmf_detach(struct device *dev);
/* Indication from bus module that dongle should be reset */
extern void brcmf_dev_reset(struct device *dev);
/* Indication from bus module to change flow-control state */
extern void brcmf_txflowblock(struct device *dev, bool state);
......
......@@ -845,6 +845,17 @@ static void brcmf_bus_detach(struct brcmf_pub *drvr)
}
}
void brcmf_dev_reset(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
if (drvr == NULL)
return;
brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
}
void brcmf_detach(struct device *dev)
{
int i;
......
......@@ -1524,10 +1524,23 @@ static void brcmf_release_fw(struct list_head *q)
}
}
static int brcmf_usb_reset_device(struct device *dev, void *notused)
{
/* device past is the usb interface so we
* need to use parent here.
*/
brcmf_dev_reset(dev->parent);
return 0;
}
void brcmf_usb_exit(void)
{
struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
int ret;
brcmf_dbg(USB, "Enter\n");
ret = driver_for_each_device(drv, NULL, NULL,
brcmf_usb_reset_device);
usb_deregister(&brcmf_usbdrvr);
brcmf_release_fw(&fw_image_list);
}
......
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