[PATCH v2 19/19] util/vfio-helpers: Remove now unused qemu_vfio_pci_init_irq()

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Our only user, the NVMe block driver, switched to the MSIX API.
As this function is now unused, remove it.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 include/qemu/vfio-helpers.h |  2 --
 util/vfio-helpers.c         | 43 -------------------------------------
 2 files changed, 45 deletions(-)

diff --git a/include/qemu/vfio-helpers.h b/include/qemu/vfio-helpers.h
index 4c06694e03a..f42371d25d6 100644
--- a/include/qemu/vfio-helpers.h
+++ b/include/qemu/vfio-helpers.h
@@ -29,8 +29,6 @@ void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index,
                             Error **errp);
 void qemu_vfio_pci_unmap_bar(QEMUVFIOState *s, int index, void *bar,
                              uint64_t offset, uint64_t size);
-int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e,
-                           int irq_type, Error **errp);
 int qemu_vfio_pci_msix_init_irqs(QEMUVFIOState *s,
                                  unsigned *irq_count, Error **errp);
 int qemu_vfio_pci_msix_set_irq(QEMUVFIOState *s, unsigned irq_index,
diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 18142e6be86..83d6eef13fb 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -189,49 +189,6 @@ void qemu_vfio_pci_unmap_bar(QEMUVFIOState *s, int index, void *bar,
     }
 }
 
-/**
- * Initialize device IRQ with @irq_type and register an event notifier.
- */
-int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e,
-                           int irq_type, Error **errp)
-{
-    int r;
-    struct vfio_irq_set *irq_set;
-    size_t irq_set_size;
-    struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
-
-    irq_info.index = irq_type;
-    if (ioctl(s->device, VFIO_DEVICE_GET_IRQ_INFO, &irq_info)) {
-        error_setg_errno(errp, errno, "Failed to get device interrupt info");
-        return -errno;
-    }
-    if (!(irq_info.flags & VFIO_IRQ_INFO_EVENTFD)) {
-        error_setg(errp, "Device interrupt doesn't support eventfd");
-        return -EINVAL;
-    }
-
-    irq_set_size = sizeof(*irq_set) + sizeof(int);
-    irq_set = g_malloc0(irq_set_size);
-
-    /* Get to a known IRQ state */
-    *irq_set = (struct vfio_irq_set) {
-        .argsz = irq_set_size,
-        .flags = VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER,
-        .index = irq_info.index,
-        .start = 0,
-        .count = 1,
-    };
-
-    *(int *)&irq_set->data = event_notifier_get_fd(e);
-    r = ioctl(s->device, VFIO_DEVICE_SET_IRQS, irq_set);
-    g_free(irq_set);
-    if (r) {
-        error_setg_errno(errp, errno, "Failed to setup device interrupt");
-        return -errno;
-    }
-    return 0;
-}
-
 /**
  * Initialize a MSIX IRQ and register its event notifier.
  * @irq_index: MSIX IRQ index
-- 
2.26.2