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Re: rtl8822cs, mainline 6.16-rc7: kernel reports ' unsupported rf path'

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> Wiadomość napisana przez Ping-Ke Shih <pkshih@xxxxxxxxxxx> w dniu 23 lip 2025, o godz. 14:23:
> 
> Thanks for the hints. I think it's worth to try:
> 
> diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
> index fa0ed39cb199..5ea13c775796 100644
> --- a/drivers/net/wireless/realtek/rtw88/main.c
> +++ b/drivers/net/wireless/realtek/rtw88/main.c
> @@ -1861,6 +1861,8 @@ static int rtw_chip_parameter_setup(struct rtw_dev *rtwdev)
>        hal->chip_version = rtw_read32(rtwdev, REG_SYS_CFG1);
>        hal->cut_version = BIT_GET_CHIP_VER(hal->chip_version);
>        hal->mp_chip = (hal->chip_version & BIT_RTL_ID) ? 0 : 1;
> +       printk("rtw88: %s:%d hal->chip_version=0x%x\n",
> +               __func__, __LINE__, hal->chip_version);
>        if (hal->chip_version & BIT_RF_TYPE_ID) {
>                hal->rf_type = RF_2T2R;
>                hal->rf_path_num = 2;
> diff --git a/drivers/net/wireless/realtek/rtw88/sdio.c b/drivers/net/wireless/realtek/rtw88/sdio.c
> index cc2d4fef3587..5c9e7c8cdd7e 100644
> --- a/drivers/net/wireless/realtek/rtw88/sdio.c
> +++ b/drivers/net/wireless/realtek/rtw88/sdio.c
> @@ -144,6 +144,10 @@ static u32 rtw_sdio_to_io_address(struct rtw_dev *rtwdev, u32 addr,
> 
> static bool rtw_sdio_use_direct_io(struct rtw_dev *rtwdev, u32 addr)
> {
> +       if (!rtw_sdio_is_bus_addr(addr) &&
> +           !test_bit(RTW_FLAG_POWERON, rtwdev->flags))
> +               return false;
> +
>        return !rtw_sdio_is_sdio30_supported(rtwdev) ||
>                rtw_sdio_is_bus_addr(addr);
> }
> 

With this change all works ok.
15 boots and all 15 were with nice wifi :-)

 dmesg from working system: https://termbin.com/09a1






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