Commit 9ebacb1e authored by Po-Hao Huang's avatar Po-Hao Huang Committed by Kalle Valo
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rtw88: pci: 8821c: Disable 21ce completion timeout 



Disable this capability to avoid timeout errors on certain platforms.
Without it, pci bus might stuck and leads to disconnection.

Signed-off-by: default avatarPo-Hao Huang <phhuang@realtek.com>
Signed-off-by: default avatarPing-Ke Shih <pkshih@realtek.com>
Tested-by: default avatarChris Chiu <chris.chiu@canonical.com>
Signed-off-by: default avatarKalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220420093058.31646-2-pkshih@realtek.com
parent 9cbdadf0

drivers/net/wireless/realtek/rtw88/pci.c

+12 −0
Original line number Diff line number Diff line
@@ -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)