From: Po-Hao Huang <phhuang@xxxxxxxxxxx>
Disable this capability to avoid timeout errors on certain platforms.
Without it, pci bus might stuck and leads to disconnection.
Signed-off-by: Po-Hao Huang <phhuang@xxxxxxxxxxx>
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/pci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c
index 33042b63a151e..3ef0de70af328 100644
--- a/drivers/net/wireless/realtek/rtw88/pci.c
+++ b/drivers/net/wireless/realtek/rtw88/pci.c
@@ -1482,12 +1482,15 @@ static void rtw_pci_interface_cfg(struct rtw_dev *rtwdev)
static void rtw_pci_phy_cfg(struct rtw_dev *rtwdev)
{
+ struct rtw_pci *rtwpci = (struct rtw_pci *)rtwdev->priv;
struct rtw_chip_info *chip = rtwdev->chip;
+ struct pci_dev *pdev = rtwpci->pdev;
const struct rtw_intf_phy_para *para;
u16 cut;
u16 value;
u16 offset;
int i;
+ int ret;
cut = BIT(0) << rtwdev->hal.cut_version;
@@ -1520,6 +1523,15 @@ static void rtw_pci_phy_cfg(struct rtw_dev *rtwdev)
}
rtw_pci_link_cfg(rtwdev);
+
+ /* Disable 8821ce completion timeout by default */
+ if (chip->id == RTW_CHIP_TYPE_8821C) {
+ ret = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL2,
+ PCI_EXP_DEVCTL2_COMP_TMOUT_DIS);
+ if (ret)
+ rtw_err(rtwdev, "failed to set PCI cap, ret = %d\n",
+ ret);
+ }
}
static int __maybe_unused rtw_pci_suspend(struct device *dev)
--
2.25.1
