[PATCH v2] wifi: rtw88: disable ASPM for Lenovo IdeaPad S340-14IWL

[Ata İlhan Köktürk]

The Lenovo IdeaPad S340-14IWL (DMI product name "81N4") experiences
severe connectivity issues with the Realtek 8822BE rtw88 PCIe
wireless card when ASPM is enabled. Reported symptoms include
frequent disconnections, cannot resume after sleep, kernel panics,
and the driver failing to load time to time.

The issue can be worked around by either adding pci=noaspm to the
kernel command line or by reloading the driver with disable_aspm=1
via modprobe. Add a DMI quirk to disable ASPM automatically for
this device.

Signed-off-by: Ata İlhan Köktürk <atailhan2006@xxxxxxxxx>
---
 drivers/net/wireless/realtek/rtw88/pci.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c
index a30467228..4befc0eeb 100644
--- a/drivers/net/wireless/realtek/rtw88/pci.c
+++ b/drivers/net/wireless/realtek/rtw88/pci.c
@@ -1779,6 +1779,15 @@ static const struct dmi_system_id rtw_pci_quirks[] = {
 		.driver_data = (void *)(BIT(QUIRK_DIS_CAP_PCI_ASPM) |
 					BIT(QUIRK_DIS_CAP_LPS_DEEP)),
 	},
+	{
+		.callback = rtw_pci_disable_caps,
+		.ident = "Lenovo IdeaPad S340-14IWL",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "81N4"),
+		},
+		.driver_data = (void *)BIT(QUIRK_DIS_CAP_PCI_ASPM),
+	},
 	{}
 };
 
-- 
2.55.0