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[3.14,1/3] mwifiex: clean pcie ring only when device is present

Message ID 1392766916-10734-1-git-send-email-bzhao@marvell.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Bing Zhao Feb. 18, 2014, 11:41 p.m. UTC 
From: Avinash Patil <patila@marvell.com>

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>
---
 drivers/net/wireless/mwifiex/wmm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
index e0ba011..1c5f2b6 100644
--- a/drivers/net/wireless/mwifiex/wmm.c
+++ b/drivers/net/wireless/mwifiex/wmm.c
@@ -554,7 +554,8 @@  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);