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Commit 71352b23 authored by Mike McCormack's avatar Mike McCormack Committed by John W. Linville
Browse files

rtlwifi: Use write barrier when assigning ownership 



Make sure all updates to a descriptor are flushed to memory
before assigning ownship to hardware.

Signed-off-by: default avatarMike McCormack <mikem@ring3k.org>
Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent febc9fe5

drivers/net/wireless/rtlwifi/rtl8192ce/trx.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -930,6 +930,7 @@ void rtl92ce_set_desc(u8 *pdesc, bool istx, u8 desc_name, u8 *val) 
	if (istx == true) {

	if (istx == true) {

		switch (desc_name) {

		switch (desc_name) {

		case HW_DESC_OWN:

		case HW_DESC_OWN:

			wmb();

			SET_TX_DESC_OWN(pdesc, 1);

			SET_TX_DESC_OWN(pdesc, 1);

			break;

			break;

		case HW_DESC_TX_NEXTDESC_ADDR:

		case HW_DESC_TX_NEXTDESC_ADDR:
@@ -943,6 +944,7 @@ void rtl92ce_set_desc(u8 *pdesc, bool istx, u8 desc_name, u8 *val) 
	} else {

	} else {

		switch (desc_name) {

		switch (desc_name) {

		case HW_DESC_RXOWN:

		case HW_DESC_RXOWN:

			wmb();

			SET_RX_DESC_OWN(pdesc, 1);

			SET_RX_DESC_OWN(pdesc, 1);

			break;

			break;

		case HW_DESC_RXBUFF_ADDR:

		case HW_DESC_RXBUFF_ADDR: