-stable review patch. If anyone has any objections, please let us know.
---------------------
From: Francois Romieu <[email protected]>
upstream commit: d78ad8cbfe73ad568de38814a75e9c92ad0a907c
Original comment (Karsten):
On a MSI MS-6702E mainboard, when in rtl8169_init_one() for the first time
after BIOS has run, IntrStatus reads 5 after chip has been reset.
IntrStatus should equal 0 there, so patch changes IntrStatus reset to happen
after chip reset instead of before.
Remark (Francois):
Assuming that the loglevel of the driver is increased above NETIF_MSG_INTR,
the bug reveals itself with a typical "interrupt 0025 in poll" message
at startup. In retrospect, the message should had been read as an hint of
an unexpected hardware state several months ago :o(
Fixes (at least part of) https://bugzilla.redhat.com/show_bug.cgi?id=460747
Signed-off-by: Karsten Wiese <[email protected]>
Signed-off-by: Francois Romieu <[email protected]>
Tested-by: Josep <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
drivers/net/r8169.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2075,8 +2075,7 @@ rtl8169_init_one(struct pci_dev *pdev, c
if (!tp->pcie_cap && netif_msg_probe(tp))
dev_info(&pdev->dev, "no PCI Express capability\n");
- /* Unneeded ? Don't mess with Mrs. Murphy. */
- rtl8169_irq_mask_and_ack(ioaddr);
+ RTL_W16(IntrMask, 0x0000);
/* Soft reset the chip. */
RTL_W8(ChipCmd, CmdReset);
@@ -2088,6 +2087,8 @@ rtl8169_init_one(struct pci_dev *pdev, c
msleep_interruptible(1);
}
+ RTL_W16(IntrStatus, 0xffff);
+
/* Identify chip attached to board */
rtl8169_get_mac_version(tp, ioaddr);