[ 62/84] r8169: remove erroneous processing of always set bit.

Greg Kroah-Hartman
2012-10-11T02:20:53Z

From: Francois Romieu <romieu@fr.zoreil.com>

commit e03f33af79f0772156e1a1a1e36bdddf8012b2e4 upstream.

When set, RxFOVF (resp. RxBOVF) is always 1 (resp. 0).

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes <hayeswang@realtek.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/r8169.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -388,6 +388,7 @@ enum rtl_register_content {
RxOK = 0x0001,

/* RxStatusDesc */
+ RxBOVF = (1 << 24),
RxFOVF = (1 << 23),
RxRWT = (1 << 22),
RxRES = (1 << 21),
@@ -666,6 +667,7 @@ struct rtl8169_private {
struct mii_if_info mii;
struct rtl8169_counters counters;
u32 saved_wolopts;
+ u32 opts1_mask;

const struct firmware *fw;
#define RTL_FIRMWARE_UNKNOWN ERR_PTR(-EAGAIN);
@@ -3442,6 +3444,9 @@ rtl8169_init_one(struct pci_dev *pdev, c
tp->intr_event = cfg->intr_event;
tp->napi_event = cfg->napi_event;

+ tp->opts1_mask = (tp->mac_version != RTL_GIGA_MAC_VER_01) ?
+ ~(RxBOVF | RxFOVF) : ~0;
+
init_timer(&tp->timer);
tp->timer.data = (unsigned long) dev;
tp->timer.function = rtl8169_phy_timer;
@@ -4920,7 +4925,7 @@ static int rtl8169_rx_interrupt(struct n
u32 status;

rmb();
- status = le32_to_cpu(desc->opts1);
+ status = le32_to_cpu(desc->opts1) & tp->opts1_mask;

if (status & DescOwn)
break;