[PULL 32/40] spapr/xive: Rework error handling of kvmppc_xive_set_source_config()

[David Gibson]

From: Greg Kurz <groug@kaod.org>

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>
Message-Id: <159707848764.1489912.17078842252160674523.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 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 4142aaffff..f2dda69218 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 d0a08b618f..0ffbe0be02 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);
-- 
2.26.2