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Commit 4f7ba432 authored by Avinash Patil's avatar Avinash Patil Committed by John W. Linville
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mwifiex: clean pcie ring only when device is present 



Write io memory to clean PCIe buffer only when PCIe device is
present else this results into crash because of invalid memory
access.

Cc: <stable@vger.kernel.org> # 3.9+
Signed-off-by: default avatarAvinash Patil <patila@marvell.com>
Signed-off-by: default avatarBing Zhao <bzhao@marvell.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 95320774

drivers/net/wireless/mwifiex/wmm.c

+2 −1
Original line number Diff line number Diff line
@@ -559,7 +559,8 @@ mwifiex_clean_txrx(struct mwifiex_private *priv) 
	mwifiex_wmm_delete_all_ralist(priv);

	memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid));



	if (priv->adapter->if_ops.clean_pcie_ring)

	if (priv->adapter->if_ops.clean_pcie_ring &&

	    !priv->adapter->surprise_removed)

		priv->adapter->if_ops.clean_pcie_ring(priv->adapter);

	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);

}