[PATCH 7/8] rtlwifi: Use write barrier when assigning ownership
From: Mike McCormack <hidden>
Date: 2011-05-30 23:50:13
Subsystem:
networking drivers (wireless), the rest · Maintainers:
Johannes Berg, Linus Torvalds
Make sure all updates to a descriptor are flushed to memory before assigning ownship to hardware. Signed-off-by: Mike McCormack <redacted> Signed-off-by: Larry Finger <redacted> --- drivers/net/wireless/rtlwifi/rtl8192ce/trx.c | 2 ++ 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 54b2bd5..06d9ddb 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c@@ -932,6 +932,7 @@ 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:
@@ -945,6 +946,7 @@ 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:
--
1.7.4.1