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

Ata İlhan Köktürk <[email protected]> wrote:
> The Lenovo IdeaPad S340-14IWL (DMI product name "81N4") experiences
> severe connectivity issues with the rtw88 PCIe wireless card when
> ASPM is enabled. Reported symptoms include frequent disconnections,
> kernel panics, and the driver failing to load.
> 
> The issue can be worked around by either adding pci=noaspm to the
> kernel command line or by reloading the driver via modprobe. Add a
> DMI quirk to disable ASPM automatically for this device.
> 
> Signed-off-by: Ata İlhan Köktürk <[email protected]>
> ---
>  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..9df8954d8 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)),

Remove redundant parenthesis. 

.driver_data = (void *)BIT(QUIRK_DIS_CAP_PCI_ASPM),


> +       },
>         {}
>  };
> 
> --
> 2.55.0