Re: [PATCH] ufs: core: fix WB resize use wrong offset

["Peter Wang (王信友)" <peter.wang@mediatek.com>]

On Wed, 2025-04-23 at 17:29 +0800, Huan Tang wrote:
> 'Commit 500d4b742e0c ("scsi: ufs: core: Add WB buffer resize
> support")'
> incorrectly reads the value of offset
> "DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP" to determine whether WB
> resize
> is supported.
> 
> Fix the issue by read the value of "DEVICE_DESC_PARAM_EXT_WB_SUP"
> to determine whether the device supports WB resize.
> 
> Fixes: 500d4b742e0c ("scsi: ufs: core: Add WB buffer resize support")
> Reported-by: Peter Wang <peter.wang@mediatek.com>
> Closes: https://lore.kernel.org/all/7ce05b28f5d4b4b4973244310010c1487
> bdf4124.camel@mediatek.com/
> Signed-off-by: Huan Tang <tanghuan@vivo.com>
> ---
>  drivers/ufs/core/ufshcd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
> index dc55c94fa45e..1c53ccf5a616 100644
> --- a/drivers/ufs/core/ufshcd.c
> +++ b/drivers/ufs/core/ufshcd.c
> @@ -8143,7 +8143,7 @@ static void ufshcd_wb_probe(struct ufs_hba
> *hba, const u8 *desc_buf)
>         dev_info->wb_buffer_type =
> desc_buf[DEVICE_DESC_PARAM_WB_TYPE];
> 
>         dev_info->ext_wb_sup =  get_unaligned_be16(desc_buf +
> -                                              
> DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
> +                                              
> DEVICE_DESC_PARAM_EXT_WB_SUP);
> 
>         dev_info->b_presrv_uspc_en =
>                 desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
> --
> 2.39.0
> 


Reviewed-by: Peter Wang <peter.wang@mediatek.com>