ath9k: Enable extended synch for AR9485 to fix L0s recovery issue
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index 71339da..38d2221 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -103,11 +103,23 @@
pci_write_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, aspm);
}
+static void ath_pci_extn_synch_enable(struct ath_common *common)
+{
+ struct ath_softc *sc = (struct ath_softc *) common->priv;
+ struct pci_dev *pdev = to_pci_dev(sc->dev);
+ u8 lnkctl;
+
+ pci_read_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, &lnkctl);
+ lnkctl |= PCI_EXP_LNKCTL_ES;
+ pci_write_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, lnkctl);
+}
+
static const struct ath_bus_ops ath_pci_bus_ops = {
.ath_bus_type = ATH_PCI,
.read_cachesize = ath_pci_read_cachesize,
.eeprom_read = ath_pci_eeprom_read,
.bt_coex_prep = ath_pci_bt_coex_prep,
+ .extn_synch_en = ath_pci_extn_synch_enable,
};
static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)