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authorSujith Manoharan <c_manoha@qualcomm.com>2012-09-22 00:14:28 +0530
committerJohn W. Linville <linville@tuxdriver.com>2012-09-25 15:57:43 -0400
commit046b6802c8d3c8a57448485513bf7291633e0fa3 (patch)
tree0bacf396c12b9bb33a512b4de2247187e0c35388 /drivers/net/wireless/ath/ath9k/pci.c
parent63c664242d656b8507b10d66e0088e9b640f8906 (diff)
ath9k: Disable ASPM only for AR9285
Currently, ASPM is disabled for all WLAN+BT combo chipsets when BTCOEX is enabled. This is incorrect since the workaround is required only for WB195, which is a AR9285+AR3011 combo solution. Fix this by checking for the HW version when enabling the workaround. Cc: stable@vger.kernel.org Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Tested-by: Paul Stewart <pstew@chromium.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/pci.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/pci.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index a8f6126f6b2d..c0c599673eeb 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -128,8 +128,9 @@ static void ath_pci_aspm_init(struct ath_common *common)
if (!parent)
return;
- if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
- /* Bluetooth coexistance requires disabling ASPM. */
+ if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) &&
+ (AR_SREV_9285(ah))) {
+ /* Bluetooth coexistance requires disabling ASPM for AR9285. */
pci_read_config_byte(pdev, pos + PCI_EXP_LNKCTL, &aspm);
aspm &= ~(PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
pci_write_config_byte(pdev, pos + PCI_EXP_LNKCTL, aspm);