Re: [PATCH v12 01/25] firmware: arm_scmi: Add new SCMIv4.0 error codes definitions

["David Hildenbrand (Arm)" <david@kernel.org>]

On 9/20/26 11:19, Cristian Marussi wrote:
> SCMIv4.0 introduces a couple of new possible protocol error codes: add
> the needed definitions and mappings to Linux error values.
> 
> Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
> ---
> v4 --> v5
>  - map SCMI_ERR_IN_USE to EBUSY as natural
> ---
>  drivers/firmware/arm_scmi/common.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
> index fe8c22cfb9f7..6f89ba96493d 100644
> --- a/drivers/firmware/arm_scmi/common.h
> +++ b/drivers/firmware/arm_scmi/common.h
> @@ -48,6 +48,8 @@ enum scmi_error_codes {
>  	SCMI_ERR_GENERIC = -8,	/* Generic Error */
>  	SCMI_ERR_HARDWARE = -9,	/* Hardware Error */
>  	SCMI_ERR_PROTOCOL = -10,/* Protocol Error */
> +	SCMI_ERR_IN_USE = -11,  /* In Use Error */
> +	SCMI_ERR_PARTIAL = -12, /* Partial Error */
>  };
>  
>  static const int scmi_linux_errmap[] = {
> @@ -63,6 +65,8 @@ static const int scmi_linux_errmap[] = {
>  	-EIO,			/* SCMI_ERR_GENERIC */
>  	-EREMOTEIO,		/* SCMI_ERR_HARDWARE */
>  	-EPROTO,		/* SCMI_ERR_PROTOCOL */
> +	-EBUSY,			/* SCMI_ERR_IN_USE */
> +	-EINVAL,		/* SCMI_ERR_PARTIAL */
>  };
>  
>  static inline int scmi_to_linux_errno(int errno)

So far we had unique mappings. Now EBUSY and EINVAL could be due to two SCMI_ERR
each.

I assume in the later usage there is no need to distinguish them for now? Might
be worth stating that in the patch description.

Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>

-- 
Cheers,

David