RE: [PATCH V2] soc: imx-scu: Add SoC UID(unique identifier) support

From: Anson Huang
Date: Tue Jul 02 2019 - 03:51:09 EST


Hi, Marco

> > > + hdr->ver = IMX_SC_RPC_VERSION;
> > > + hdr->svc = IMX_SC_RPC_SVC_MISC;
> > > + hdr->func = IMX_SC_MISC_FUNC_UNIQUE_ID;
> > > + hdr->size = 1;
> > > +
> > > + /*
> > > + * SCU FW API always returns an error even the
> > > + * function is successfully executed, so skip
> > > + * returned value check.
> > > + */
> > > + imx_scu_call_rpc(soc_ipc_handle, &msg, true);
> >
> > Please can you add a TODO: or FIXME: tag and also provide the firmware
> > version containing the bug? I know that developers are very busy and
> > follow- up fixes never reach mainline ;)
>
> As I replied in previous mail, I will send out a V3 with below comment:
>
> + /*
> + * SCU FW API does NOT have returned value for
> + * this function, so skip returned value check.
> + */
> + imx_scu_call_rpc(soc_ipc_handle, &msg, true);
>
> Thanks,
> Anson.

Sorry, after further thought, regarding for SCU API without response, we should
pass the "false" as imx_scu_call_rpc()'s 3rd parameter, so I will remove the comment
and use below in V3:

+ ret = imx_scu_call_rpc(soc_ipc_handle, &msg, false);
+ if (ret) {
+ pr_err("%s: get soc uid failed, ret %d\n", __func__, ret);
+ return ret;
+ }

Thanks,
Anson