From 2728cecdc7d6bf3d216fc406718d88c35f4d09eb Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Wed, 22 Jul 2015 04:53:45 -0700 Subject: [PATCH] mwifiex: corrections in PCIe event skb handling Preallocated event SKBs are getting reused for PCIe chipset. Their physical addresses are shared with firmware so that firmware can write data into them. This patch makes sure that SKB is cleared and length is set to default while submitting it to firmware. Signed-off-by: Amitkumar Karwar Signed-off-by: Zhaoyang Liu Signed-off-by: Kalle Valo --- drivers/net/wireless/mwifiex/pcie.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c index 77b9055a2d14..33c75d741017 100644 --- a/drivers/net/wireless/mwifiex/pcie.c +++ b/drivers/net/wireless/mwifiex/pcie.c @@ -1807,6 +1807,8 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter, if (!card->evt_buf_list[rdptr]) { skb_push(skb, INTF_HEADER_LEN); + skb_put(skb, MAX_EVENT_SIZE - skb->len); + memset(skb->data, 0, MAX_EVENT_SIZE); if (mwifiex_map_pci_memory(adapter, skb, MAX_EVENT_SIZE, PCI_DMA_FROMDEVICE)) -- 2.34.1