From: Mike McCormack <mikem@ring3k.org>
To: Larry.Finger@lwfinger.net, chaoming_li@realsil.com.cn
Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org
Subject: [PATCH 6/8] rtlwifi: Assign rx buffer ownership to hardware last
Date: Mon, 23 May 2011 22:54:44 +0900 [thread overview]
Message-ID: <4DDA6724.1070809@ring3k.org> (raw)
Ownership of an rx buffer should only be given to the hardware
after all other changes are written, otherwise there's
a potential race.
Signed-off-by: Mike McCormack <mikem@ring3k.org>
---
drivers/net/wireless/rtlwifi/pci.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index fd74396..4fe405a 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -782,8 +782,6 @@ done:
rtlpriv->cfg->ops->set_desc((u8 *) pdesc, false,
HW_DESC_RXBUFF_ADDR,
(u8 *)&bufferaddress);
- rtlpriv->cfg->ops->set_desc((u8 *)pdesc, false, HW_DESC_RXOWN,
- (u8 *)&tmp_one);
rtlpriv->cfg->ops->set_desc((u8 *)pdesc, false,
HW_DESC_RXPKT_LEN,
(u8 *)&rtlpci->rxbuffersize);
@@ -793,6 +791,9 @@ done:
HW_DESC_RXERO,
(u8 *)&tmp_one);
+ rtlpriv->cfg->ops->set_desc((u8 *)pdesc, false, HW_DESC_RXOWN,
+ (u8 *)&tmp_one);
+
index = (index + 1) % rtlpci->rxringcount;
}
--
1.7.4.1
next reply other threads:[~2011-05-23 13:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 13:54 Mike McCormack [this message]
2011-05-23 19:52 ` [PATCH 6/8] rtlwifi: Assign rx buffer ownership to hardware last Larry Finger
-- strict thread matches above, loose matches on Subject: below --
2011-05-25 0:40 Mike McCormack
2011-05-30 23:49 Mike McCormack
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