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rtw88: pci: 8821c: Disable 21ce completion timeout

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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@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Tested-by: Chris Chiu <chris.chiu@canonical.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220420093058.31646-2-pkshih@realtek.com
This commit is contained in:
Po-Hao Huang
2022-04-20 17:30:58 +08:00
committed by Kalle Valo
parent 9cbdadf009
commit 9ebacb1e7e
1 changed files with 12 additions and 0 deletions
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12
drivers/net/wireless/realtek/rtw88/pci.c
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@@ -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)