RE: [PATCH rtw-next v2 3/3] wifi: rtlwifi: disable ASPM for RTL8723BE with subsystem ID 17aa:b736

[Ping-Ke Shih <pkshih@realtek.com>]

William Hansen-Baird <william.hansen.baird@gmail.com> wrote:
> RTL8723BE outputs a large amount of PCIe AER errors during and
> after boot, even before probe and when driver is never loaded.
> This causes significant system slowdown.
> 
> The errors are the same as reported by
> commit 77a6407c6ab2 ("wifi: rtlwifi: disable ASPM for RTL8723BE with subsystem ID 11ad:1723")
> 
> Add the RTL8723BE with subsystem ID 17aa:b736 to the rtl_aspm_quirks
> table to stop the AER errors. AER errors can still be present prior to
> pci probe, as the device by default may have ASPM enabled.
> 
> Testing on a Razer Blade 14 2017 which shipped from the
> OEM equipped with an RTL8723BE card with this subsystem ID
> confirms that this patch resolves the AER flood and allows the
> wireless card to function normally once the driver takes over.
> 
> Signed-off-by: William Hansen-Baird <william.hansen.baird@gmail.com>

Only minor suggestion, so

Acked-by: Ping-Ke Shih <pkshih@realtek.com>

> ---
>  drivers/net/wireless/realtek/rtlwifi/pci.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c
> b/drivers/net/wireless/realtek/rtlwifi/pci.c
> index 9de396879806..9919c8588cbd 100644
> --- a/drivers/net/wireless/realtek/rtlwifi/pci.c
> +++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
> @@ -33,6 +33,7 @@ static const u8 ac_to_hwq[] = {
> 
>  static const struct pci_device_id rtl_aspm_quirks[] = {
>         { PCI_DEVICE_SUB(PCI_VENDOR_ID_REALTEK, 0xb723, 0x11ad, 0x1723) },
> +       { PCI_DEVICE_SUB(PCI_VENDOR_ID_REALTEK, 0xb723, 0x17aa, 0xb736) },

Would you like a comment "Razer Blade 14 2017"?

>         { 0 }
>  };
> 
> --
> 2.54.0