[U-Boot] [PATCH] video: ipuv3_fb: skip IPU shutdown if IPU was not enabled before

[Fabio Estevam]

Hi Anatolij,

On Fri, Aug 25, 2017 at 10:10 AM, Anatolij Gustschin <agust at denx.de> wrote:

>  void ipuv3_fb_shutdown(void)
>  {
> -       int i;
> +       struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
>         struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT;
> +       u32 reg;
> +       int i;
> +
> +       /*
> +        * Check if IPU clock was enabled before. Won't access
> +        * IPU registers if clock is not enabled.
> +        */
> +       reg = readl(&mxc_ccm->CCGR3);
> +       if ((reg & MXC_CCM_CCGR3_IPU1_IPU_MASK) == 0)
> +               return;

Maybe you could also check whether IPU2 has been enabled?