[PATCH V2 1/6] net/ethernet/atl1c: Disable ASPM on various chipsets
From: Matthew Garrett <hidden>
Date: 2011-11-11 16:14:46
The Windows driver disables ASPM support for various chipsets supported by atl1c. This adds the same set of logic to the Linux driver. ASPM is disabled on l1c, l2c, l2cb and l2cb2 devices except for those in Toshiba or Lenovo devices. Data taken from http://www.atheros.cz/atheros-inf-file.php?inf=199&chipset=51&system=6 Signed-off-by: Matthew Garrett <redacted> Cc: netdev@vger.kernel.org Cc: jcliburn@gmail.com Cc: chris.snook@gmail.com --- drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 02c7ed8..d91dabd 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c@@ -19,6 +19,7 @@ * Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <linux/pci-aspm.h> #include "atl1c.h" #define ATL1C_DRV_VERSION "1.0.1.0-NAPI"
@@ -2652,6 +2653,20 @@ static int __devinit atl1c_probe(struct pci_dev *pdev, int err = 0; + switch (pdev->device) { + case PCI_DEVICE_ID_ATTANSIC_L1C: + case PCI_DEVICE_ID_ATTANSIC_L2C: + case PCI_DEVICE_ID_ATHEROS_L2C_B: + case PCI_DEVICE_ID_ATHEROS_L2C_B2: + if (pdev->subsystem_vendor == PCI_VENDOR_ID_TOSHIBA || + pdev->subsystem_vendor == PCI_VENDOR_ID_LENOVO) + break; + pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | + PCIE_LINK_STATE_L1 | + PCIE_LINK_STATE_CLKPM); + break; + } + /* enable device (incl. PCI PM wakeup and hotplug setup) */ err = pci_enable_device_mem(pdev); if (err) {
--
1.7.7.1