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[08/16] mwifiex: avoid memsetting PCIe event buffer

Message ID 1442583138-2979-9-git-send-email-akarwar@marvell.com (mailing list archive)
State Accepted
Delegated to: Kalle Valo
Headers show

Commit Message

Amitkumar Karwar Sept. 18, 2015, 1:32 p.m. UTC
Preallocated PCIe buffer is being reused for all PCIe interface
events. Physical address of the buffer is shared with firmware
so that it can perform DMA on it. As event length is specified
in the header, there should not be a problem if the buffer gets
overwritten.
We will save some cycles by avoiding memset everytime while
submitting the buffer to firmware.

Fixes: 2728cecdc7d6bf3d21(mwifiex: corrections in PCIe event skb)
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
---
 drivers/net/wireless/mwifiex/pcie.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
index 408b684..21192b6 100644
--- a/drivers/net/wireless/mwifiex/pcie.c
+++ b/drivers/net/wireless/mwifiex/pcie.c
@@ -1815,7 +1815,6 @@  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))