diff options
| author | Po-Hao Huang <phhuang@realtek.com> | 2022-04-20 17:30:58 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2022-04-23 15:46:53 +0300 |
| commit | 9ebacb1e7e75f2a7a9745d42da7031d3a1741029 (patch) | |
| tree | f5413bdeb01f77c105f9da5d52948cb96e027220 /drivers/net/wireless/realtek/rtw88/pci.c | |
| parent | 9cbdadf0097fc4a77071c61ed28a07eaac97f8f6 (diff) | |
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: 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
Diffstat (limited to 'drivers/net/wireless/realtek/rtw88/pci.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/pci.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c index 33042b63a151..3ef0de70af32 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) |