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authorMike McCormack2011-05-31 08:50:07 +0900
committerJohn W. Linville2011-06-03 15:01:06 -0400
commit71352b2318675cf6a3f54c02a33d91ac17af1626 (patch)
tree648ee093ffd42c466e276859c7381629ee72c89a /drivers
parentfebc9fe5387ed37cb329563ae29d21b41c71a9dd (diff)
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: Mike McCormack <mikem@ring3k.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/rtlwifi/rtl8192ce/trx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
index ac95dc44374d..2492cc234c03 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
@@ -930,6 +930,7 @@ void rtl92ce_set_desc(u8 *pdesc, bool istx, u8 desc_name, u8 *val)
if (istx == true) {
switch (desc_name) {
case HW_DESC_OWN:
+ wmb();
SET_TX_DESC_OWN(pdesc, 1);
break;
case HW_DESC_TX_NEXTDESC_ADDR:
@@ -943,6 +944,7 @@ void rtl92ce_set_desc(u8 *pdesc, bool istx, u8 desc_name, u8 *val)
} else {
switch (desc_name) {
case HW_DESC_RXOWN:
+ wmb();
SET_RX_DESC_OWN(pdesc, 1);
break;
case HW_DESC_RXBUFF_ADDR: