[PATCH 17/20] spapr: Remove unused return value in claim path

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

spapr_irq_claim() and the hooks it is based on return an integer error code
as well as taking an Error ** parameter.  But none of the callers check the
integer, so we can remove it and just use the richer Error **.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr_irq.c         | 32 +++++++++++++-------------------
 include/hw/ppc/spapr_irq.h |  4 ++--
 2 files changed, 15 insertions(+), 21 deletions(-)

diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
index 261d66ba17..2673a90604 100644
--- a/hw/ppc/spapr_irq.c
+++ b/hw/ppc/spapr_irq.c
@@ -112,8 +112,8 @@ static void spapr_irq_init_xics(SpaprMachineState *spapr, Error **errp)
     spapr->ics = ICS_SPAPR(obj);
 }
 
-static int spapr_irq_claim_xics(SpaprMachineState *spapr, int irq, bool lsi,
-                                Error **errp)
+static void spapr_irq_claim_xics(SpaprMachineState *spapr, int irq, bool lsi,
+                                 Error **errp)
 {
     ICSState *ics = spapr->ics;
 
@@ -122,11 +122,10 @@ static int spapr_irq_claim_xics(SpaprMachineState *spapr, int irq, bool lsi,
 
     if (!ics_irq_free(ics, irq - ics->offset)) {
         error_setg(errp, "IRQ %d is not free", irq);
-        return -1;
+        return;
     }
 
     ics_set_irq_type(ics, irq - ics->offset, lsi);
-    return 0;
 }
 
 static void spapr_irq_free_xics(SpaprMachineState *spapr, int irq)
@@ -252,14 +251,12 @@ static void spapr_irq_init_xive(SpaprMachineState *spapr, Error **errp)
     spapr_xive_hcall_init(spapr);
 }
 
-static int spapr_irq_claim_xive(SpaprMachineState *spapr, int irq, bool lsi,
-                                Error **errp)
+static void spapr_irq_claim_xive(SpaprMachineState *spapr, int irq, bool lsi,
+                                 Error **errp)
 {
     if (!spapr_xive_irq_claim(spapr->xive, irq, lsi)) {
         error_setg(errp, "IRQ %d is invalid", irq);
-        return -1;
     }
-    return 0;
 }
 
 static void spapr_irq_free_xive(SpaprMachineState *spapr, int irq)
@@ -406,25 +403,22 @@ static void spapr_irq_init_dual(SpaprMachineState *spapr, Error **errp)
     }
 }
 
-static int spapr_irq_claim_dual(SpaprMachineState *spapr, int irq, bool lsi,
-                                Error **errp)
+static void spapr_irq_claim_dual(SpaprMachineState *spapr, int irq, bool lsi,
+                                 Error **errp)
 {
     Error *local_err = NULL;
-    int ret;
 
-    ret = spapr_irq_xics.claim(spapr, irq, lsi, &local_err);
+    spapr_irq_xics.claim(spapr, irq, lsi, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
-        return ret;
+        return;
     }
 
-    ret = spapr_irq_xive.claim(spapr, irq, lsi, &local_err);
+    spapr_irq_xive.claim(spapr, irq, lsi, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
-        return ret;
+        return;
     }
-
-    return ret;
 }
 
 static void spapr_irq_free_dual(SpaprMachineState *spapr, int irq)
@@ -622,12 +616,12 @@ void spapr_irq_init(SpaprMachineState *spapr, Error **errp)
                                       spapr->irq->nr_xirqs + SPAPR_XIRQ_BASE);
 }
 
-int spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp)
+void spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp)
 {
     assert(irq >= SPAPR_XIRQ_BASE);
     assert(irq < (spapr->irq->nr_xirqs + SPAPR_XIRQ_BASE));
 
-    return spapr->irq->claim(spapr, irq, lsi, errp);
+    spapr->irq->claim(spapr, irq, lsi, errp);
 }
 
 void spapr_irq_free(SpaprMachineState *spapr, int irq, int num)
diff --git a/include/hw/ppc/spapr_irq.h b/include/hw/ppc/spapr_irq.h
index ed88b4599a..75279ca137 100644
--- a/include/hw/ppc/spapr_irq.h
+++ b/include/hw/ppc/spapr_irq.h
@@ -42,7 +42,7 @@ typedef struct SpaprIrq {
     uint8_t     ov5;
 
     void (*init)(SpaprMachineState *spapr, Error **errp);
-    int (*claim)(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
+    void (*claim)(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
     void (*free)(SpaprMachineState *spapr, int irq);
     void (*print_info)(SpaprMachineState *spapr, Monitor *mon);
     void (*dt_populate)(SpaprMachineState *spapr, uint32_t nr_servers,
@@ -61,7 +61,7 @@ extern SpaprIrq spapr_irq_xive;
 extern SpaprIrq spapr_irq_dual;
 
 void spapr_irq_init(SpaprMachineState *spapr, Error **errp);
-int spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
+void spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
 void spapr_irq_free(SpaprMachineState *spapr, int irq, int num);
 qemu_irq spapr_qirq(SpaprMachineState *spapr, int irq);
 int spapr_irq_post_load(SpaprMachineState *spapr, int version_id);
-- 
2.21.0