Re: [PATCH 08/14] spapr/xive: Rework error handling of kvmppc_xive_set_source_config()

[David Gibson <david@gibson.dropbear.id.au>]

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On Mon, Aug 10, 2020 at 06:54:47PM +0200, Greg Kurz wrote:
> Since kvm_device_access() returns a negative errno on failure, convert
> kvmppc_xive_set_source_config() to use it for error checking. This allows
> to get rid of the local_err boilerplate.
> 
> Propagate the return value so that callers may use it as well to check
> failures.
> 
> Signed-off-by: Greg Kurz <groug@kaod.org>

Applied to ppc-for-5.2.

> ---
>  hw/intc/spapr_xive_kvm.c    |   13 ++++---------
>  include/hw/ppc/spapr_xive.h |    4 ++--
>  2 files changed, 6 insertions(+), 11 deletions(-)
> 
> diff --git a/hw/intc/spapr_xive_kvm.c b/hw/intc/spapr_xive_kvm.c
> index 4142aaffff47..f2dda692183b 100644
> --- a/hw/intc/spapr_xive_kvm.c
> +++ b/hw/intc/spapr_xive_kvm.c
> @@ -186,8 +186,8 @@ int kvmppc_xive_cpu_connect(XiveTCTX *tctx, Error **errp)
>   * XIVE Interrupt Source (KVM)
>   */
>  
> -void kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
> -                                   Error **errp)
> +int kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
> +                                  Error **errp)
>  {
>      uint32_t end_idx;
>      uint32_t end_blk;
> @@ -196,7 +196,6 @@ void kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
>      bool masked;
>      uint32_t eisn;
>      uint64_t kvm_src;
> -    Error *local_err = NULL;
>  
>      assert(xive_eas_is_valid(eas));
>  
> @@ -216,12 +215,8 @@ void kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
>      kvm_src |= ((uint64_t)eisn << KVM_XIVE_SOURCE_EISN_SHIFT) &
>          KVM_XIVE_SOURCE_EISN_MASK;
>  
> -    kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_SOURCE_CONFIG, lisn,
> -                      &kvm_src, true, &local_err);
> -    if (local_err) {
> -        error_propagate(errp, local_err);
> -        return;
> -    }
> +    return kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_SOURCE_CONFIG, lisn,
> +                             &kvm_src, true, errp);
>  }
>  
>  void kvmppc_xive_sync_source(SpaprXive *xive, uint32_t lisn, Error **errp)
> diff --git a/include/hw/ppc/spapr_xive.h b/include/hw/ppc/spapr_xive.h
> index d0a08b618f79..0ffbe0be0280 100644
> --- a/include/hw/ppc/spapr_xive.h
> +++ b/include/hw/ppc/spapr_xive.h
> @@ -80,8 +80,8 @@ int kvmppc_xive_connect(SpaprInterruptController *intc, uint32_t nr_servers,
>                          Error **errp);
>  void kvmppc_xive_disconnect(SpaprInterruptController *intc);
>  void kvmppc_xive_reset(SpaprXive *xive, Error **errp);
> -void kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
> -                                   Error **errp);
> +int kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
> +                                  Error **errp);
>  void kvmppc_xive_sync_source(SpaprXive *xive, uint32_t lisn, Error **errp);
>  uint64_t kvmppc_xive_esb_rw(XiveSource *xsrc, int srcno, uint32_t offset,
>                              uint64_t data, bool write);
> 
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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