diff options
| author | Malcolm Priestley <tvboxspy@gmail.com> | 2013-09-22 20:48:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-26 01:53:40 +0200 |
| commit | e3eb270fab7734427dd8171a93e4946fe28674bc (patch) | |
| tree | 827ab950202b2d8367b6692e50e44db4df8e603a | |
| parent | staging: vt6656: rxtx.c [BUG] s_vGetFreeContext dead lock on null apTD. (diff) | |
| download | linux-e3eb270fab7734427dd8171a93e4946fe28674bc.tar.xz linux-e3eb270fab7734427dd8171a93e4946fe28674bc.zip | |
staging: vt6656: [BUG] main_usb.c oops on device_close move flag earlier.
The vt6656 is prone to resetting on the usb bus.
It seems there is a race condition and wpa supplicant is
trying to open the device via iw_handlers before its actually
closed at a stage that the buffers are being removed.
The device is longer considered open when the
buffers are being removed. So move ~DEVICE_FLAGS_OPENED
flag to before freeing the device buffers.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/vt6656/main_usb.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c index 536971786ae8..6f9d28182445 100644 --- a/drivers/staging/vt6656/main_usb.c +++ b/drivers/staging/vt6656/main_usb.c @@ -1098,6 +1098,8 @@ static int device_close(struct net_device *dev) memset(pMgmt->abyCurrBSSID, 0, 6); pMgmt->eCurrState = WMAC_STATE_IDLE; + pDevice->flags &= ~DEVICE_FLAGS_OPENED; + device_free_tx_bufs(pDevice); device_free_rx_bufs(pDevice); device_free_int_bufs(pDevice); @@ -1109,7 +1111,6 @@ static int device_close(struct net_device *dev) usb_free_urb(pDevice->pInterruptURB); BSSvClearNodeDBTable(pDevice, 0); - pDevice->flags &=(~DEVICE_FLAGS_OPENED); DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "device_close2 \n"); |