[PATCH v2 11/20] vfio/pci: Make vfio_intx_enable() return bool

[Zhenzhong Duan <zhenzhong.duan@intel.com>]

This is to follow the coding standand in qapi/error.h to return bool
for bool-valued functions.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
---
 hw/vfio/pci.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 46d3c61859..7f35cb8a29 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -261,7 +261,7 @@ static void vfio_irqchip_change(Notifier *notify, void *data)
     vfio_intx_update(vdev, &vdev->intx.route);
 }
 
-static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
+static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
 {
     uint8_t pin = vfio_pci_read_config(&vdev->pdev, PCI_INTERRUPT_PIN, 1);
     Error *err = NULL;
@@ -270,7 +270,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
 
 
     if (!pin) {
-        return 0;
+        return true;
     }
 
     vfio_disable_interrupts(vdev);
@@ -292,7 +292,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
     ret = event_notifier_init(&vdev->intx.interrupt, 0);
     if (ret) {
         error_setg_errno(errp, -ret, "event_notifier_init failed");
-        return ret;
+        return false;
     }
     fd = event_notifier_get_fd(&vdev->intx.interrupt);
     qemu_set_fd_handler(fd, vfio_intx_interrupt, NULL, vdev);
@@ -301,7 +301,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
                                 VFIO_IRQ_SET_ACTION_TRIGGER, fd, errp)) {
         qemu_set_fd_handler(fd, NULL, NULL, vdev);
         event_notifier_cleanup(&vdev->intx.interrupt);
-        return -errno;
+        return false;
     }
 
     if (!vfio_intx_enable_kvm(vdev, &err)) {
@@ -311,7 +311,7 @@ static int vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
     vdev->interrupt = VFIO_INT_INTx;
 
     trace_vfio_intx_enable(vdev->vbasedev.name);
-    return 0;
+    return true;
 }
 
 static void vfio_intx_disable(VFIOPCIDevice *vdev)
@@ -836,8 +836,7 @@ static void vfio_msix_disable(VFIOPCIDevice *vdev)
     vfio_disable_irqindex(&vdev->vbasedev, VFIO_PCI_MSIX_IRQ_INDEX);
 
     vfio_msi_disable_common(vdev);
-    vfio_intx_enable(vdev, &err);
-    if (err) {
+    if (!vfio_intx_enable(vdev, &err)) {
         error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
@@ -2450,8 +2449,7 @@ void vfio_pci_post_reset(VFIOPCIDevice *vdev)
     Error *err = NULL;
     int nr;
 
-    vfio_intx_enable(vdev, &err);
-    if (err) {
+    if (!vfio_intx_enable(vdev, &err)) {
         error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
@@ -3194,8 +3192,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
                                              vfio_intx_routing_notifier);
         vdev->irqchip_change_notifier.notify = vfio_irqchip_change;
         kvm_irqchip_add_change_notifier(&vdev->irqchip_change_notifier);
-        ret = vfio_intx_enable(vdev, errp);
-        if (ret) {
+        if (!vfio_intx_enable(vdev, errp)) {
             goto out_deregister;
         }
     }
-- 
2.34.1