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Date: Fri, 11 Oct 2013 11:41:14 +0100 From: Luis Henriques <luis.henriques@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Malcolm Priestley <tvboxspy@...il.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Luis Henriques <luis.henriques@...onical.com> Subject: [PATCH 044/100] staging: vt6656: [BUG] main_usb.c oops on device_close move flag earlier. 3.5.7.23 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Malcolm Priestley <tvboxspy@...il.com> commit e3eb270fab7734427dd8171a93e4946fe28674bc upstream. 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@...il.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Luis Henriques <luis.henriques@...onical.com> --- drivers/staging/vt6656/main_usb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c index fa6dbe0..c829863 100644 --- a/drivers/staging/vt6656/main_usb.c +++ b/drivers/staging/vt6656/main_usb.c @@ -1220,6 +1220,8 @@ device_release_WPADEV(pDevice); 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); @@ -1231,7 +1233,6 @@ device_release_WPADEV(pDevice); usb_free_urb(pDevice->pInterruptURB); BSSvClearNodeDBTable(pDevice, 0); - pDevice->flags &=(~DEVICE_FLAGS_OPENED); DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "device_close2 \n"); -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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