Re: [PATCH] media: ipu6: Remove workaround for Meteor Lake ES2

[Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>]

On Tue, Mar 11, 2025 at 04:41:55PM +0800, Hao Yao wrote:
> There was a hardware bug which need IPU6 driver to disable the ATS.
> This workaround is not needed anymore as the bug was fixed in
> hardware level.
> 
> Signed-off-by: Hao Yao <hao.yao@intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>

Regards
Stanislaw

> ---
>  drivers/media/pci/intel/ipu6/ipu6.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/media/pci/intel/ipu6/ipu6.c b/drivers/media/pci/intel/ipu6/ipu6.c
> index 277af7cda8ee..b00d0705fefa 100644
> --- a/drivers/media/pci/intel/ipu6/ipu6.c
> +++ b/drivers/media/pci/intel/ipu6/ipu6.c
> @@ -464,11 +464,6 @@ static int ipu6_pci_config_setup(struct pci_dev *dev, u8 hw_ver)
>  {
>  	int ret;
>  
> -	/* disable IPU6 PCI ATS on mtl ES2 */
> -	if (is_ipu6ep_mtl(hw_ver) && boot_cpu_data.x86_stepping == 0x2 &&
> -	    pci_ats_supported(dev))
> -		pci_disable_ats(dev);
> -
>  	/* No PCI msi capability for IPU6EP */
>  	if (is_ipu6ep(hw_ver) || is_ipu6ep_mtl(hw_ver)) {
>  		/* likely do nothing as msi not enabled by default */
> -- 
> 2.43.0
> 
>