linux-kernel - [PATCH 1/2] e1000e: Only disable ASPM on 82573L devices

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Message-Id: <1265756630-8093-1-git-send-email-mjg@redhat.com>
Date:	Tue,  9 Feb 2010 18:03:49 -0500
From:	Matthew Garrett <mjg@...hat.com>
To:	e1000-devel@...ts.sourceforge.net
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matthew Garrett <mjg@...hat.com>
Subject: [PATCH 1/2] e1000e: Only disable ASPM on 82573L devices

The 82537 errata and comment in e1000e_disable_l1aspm both agree that
only 82537L devices are affected. Limit the L1 disable to them.

Signed-off-by: Matthew Garrett <mjg@...hat.com>
---
 drivers/net/e1000e/netdev.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 57f149b..27eed81 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -4642,6 +4642,10 @@ static void e1000e_disable_l1aspm(struct pci_dev *pdev)
 	 * Unfortunately this feature saves about 1W power consumption when
 	 * active.
 	 */
+
+	if (pdev->device != E1000_DEV_ID_82573L)
+		return;
+
 	pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
 	pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val);
 	if (val & 0x2) {
-- 
1.6.6.1

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