Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2fbe43f6f631dd7ce19fb1499d6164a5bdb34568
Commit: 2fbe43f6f631dd7ce19fb1499d6164a5bdb34568
Parent: 0d4cbb5e7f60b2f1a4d8b7f6ea4cc264262c7a01
Author: Michael Chan <[EMAIL PROTECTED]>
AuthorDate: Thu Sep 6 12:04:29 2007 +0100
Committer: David S. Miller <[EMAIL PROTECTED](none)>
CommitDate: Tue Sep 11 10:28:44 2007 +0200
[TG3]: Workaround MSI bug on 5714/5780.
A hardware bug was revealed after a recent PCI MSI patch was made to
always disable legacy INTX when enabling MSI. The 5714/5780 chips
will not generate MSI when INTX is disabled, causing MSI failure
messages to be reported, and another patch was made to workaround the
problem by disabling MSI on ServerWorks HT1000 bridge chips commonly
found with the 5714.
We workaround this chip bug by enabling INTX after we enable MSI and
after we resume from suspend.
Update version to 3.81.
This problem was discovered by David Miller.
Signed-off-by: Michael Chan <[EMAIL PROTECTED]>
Acked-by: Andy Gospodarek <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
drivers/net/tg3.c | 13 +++++++++++--
1 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 5874042..9034a05 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -64,8 +64,8 @@
#define DRV_MODULE_NAME "tg3"
#define PFX DRV_MODULE_NAME ": "
-#define DRV_MODULE_VERSION "3.80"
-#define DRV_MODULE_RELDATE "August 2, 2007"
+#define DRV_MODULE_VERSION "3.81"
+#define DRV_MODULE_RELDATE "September 5, 2007"
#define TG3_DEF_MAC_MODE 0
#define TG3_DEF_RX_MODE 0
@@ -7127,6 +7127,10 @@ static int tg3_open(struct net_device *dev)
} else if (pci_enable_msi(tp->pdev) == 0) {
u32 msi_mode;
+ /* Hardware bug - MSI won't work if INTX disabled. */
+ if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS)
+ pci_intx(tp->pdev, 1);
+
msi_mode = tr32(MSGINT_MODE);
tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE);
tp->tg3_flags2 |= TG3_FLG2_USING_MSI;
@@ -12172,6 +12176,11 @@ static int tg3_resume(struct pci_dev *pdev)
if (err)
return err;
+ /* Hardware bug - MSI won't work if INTX disabled. */
+ if ((tp->tg3_flags2 & TG3_FLG2_5780_CLASS) &&
+ (tp->tg3_flags2 & TG3_FLG2_USING_MSI))
+ pci_intx(tp->pdev, 1);
+
netif_device_attach(dev);
tg3_full_lock(tp, 0);
-
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