Re: [PATCH 1/1] virt: arm-cca-guest: fix error check for RSI_INCOMPLETE

[Gavin Shan]

On 4/11/26 2:36 AM, Sami Mujawar wrote:
> The RSI interface can return RSI_INCOMPLETE when a report spans
> multiple granules. This is an expected condition and should not be
> treated as a fatal error.
>
> Currently, arm_cca_report_new() checks for `info.result != RSI_SUCCESS`
> and bails out, which incorrectly flags RSI_INCOMPLETE as a failure.
> Fix the check to only break out on results other than RSI_SUCCESS or
> RSI_INCOMPLETE.
>
> This ensures partial reports are handled correctly and avoids spurious
> -ENXIO errors when generating attestation reports.
>
> Fixes: 7999edc484ca ("virt: arm-cca-guest: TSM_REPORT support for realms")
> Signed-off-by: Sami Mujawar <sami.mujawar@xxxxxxx>
> Reported-by: Jagdish Gediya <Jagdish.Gediya@xxxxxxx>
> ---
>   drivers/virt/coco/arm-cca-guest/arm-cca-guest.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>