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authorArend van Spriel <arend@broadcom.com>2013-01-02 15:22:40 +0100
committerJohn W. Linville <linville@tuxdriver.com>2013-01-07 15:16:56 -0500
commit81d5f1bbc47961b2347d2b92b2aec56e6bad8779 (patch)
tree21d36ca3a10a49a9df577301d2abb4d86058a27a /drivers/net/wireless/brcm80211/brcmfmac/usb.c
parentac744395ba0a0491f8524a8371ad6f7df67bf673 (diff)
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: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/usb.c')
-rw-r--r--drivers/net/wireless/brcm80211/brcmfmac/usb.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
index 22eae57d954..1df85955ad9 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
@@ -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);
}