mwifiex: clean pcie ring only when device is present
authorAvinash Patil <patila@marvell.com>
Tue, 18 Feb 2014 23:41:54 +0000 (15:41 -0800)
committerJohn W. Linville <linville@tuxdriver.com>
Thu, 20 Feb 2014 20:51:07 +0000 (15:51 -0500)
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: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/net/wireless/mwifiex/wmm.c

index 13eaeed03898288d43abf107090346d513132820..981cf6e7c73be5b65f4a90bb05ef0e9023c592f4 100644 (file)
@@ -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);
 }