static struct mcuio_soft_hc *__setup_shc(const struct mcuio_soft_hc_ops *ops, void *priv) { struct mcuio_soft_hc *shc = kzalloc(sizeof(*shc), GFP_KERNEL); if (!shc) return ERR_PTR(-ENOMEM); init_kthread_worker(&shc->irq_kworker); shc->irq_kworker_task = kthread_run(kthread_worker_fn, &shc->irq_kworker, "shc_irq"); if (IS_ERR(shc->irq_kworker_task)) { pr_err("failed to create irq tsk for shc\n"); return ERR_PTR(PTR_ERR(shc->irq_kworker_task)); } init_kthread_work(&shc->do_irq, __do_irq); shc->ops = ops; shc->priv = priv; shc->rx_circ_buf.head = shc->rx_circ_buf.tail = 0; shc->rx_circ_buf.buf = shc->rx_buf; shc->chip.name = "MCUIO-SHC"; shc->chip.irq_mask = mcuio_soft_hc_irq_mask; shc->chip.irq_unmask = mcuio_soft_hc_irq_unmask; shc->irqno = irq_alloc_desc(0); irq_set_chip(shc->irqno, &shc->chip); irq_set_handler(shc->irqno, &handle_simple_irq); irq_modify_status(shc->irqno, IRQ_NOREQUEST | IRQ_NOAUTOEN, IRQ_NOPROBE); return shc; }
int create_irq(void) { int irq = irq_alloc_desc(numa_node_id()); if (irq >= 0) activate_irq(irq); return irq; }
static int lpe_audio_setup(struct drm_i915_private *dev_priv) { int ret; dev_priv->lpe_audio.irq = irq_alloc_desc(0); if (dev_priv->lpe_audio.irq < 0) { DRM_ERROR("Failed to allocate IRQ desc: %d\n", dev_priv->lpe_audio.irq); ret = dev_priv->lpe_audio.irq; goto err; } DRM_DEBUG("irq = %d\n", dev_priv->lpe_audio.irq); ret = lpe_audio_irq_init(dev_priv); if (ret) { DRM_ERROR("Failed to initialize irqchip for lpe audio: %d\n", ret); goto err_free_irq; } dev_priv->lpe_audio.platdev = lpe_audio_platdev_create(dev_priv); if (IS_ERR(dev_priv->lpe_audio.platdev)) { ret = PTR_ERR(dev_priv->lpe_audio.platdev); DRM_ERROR("Failed to create lpe audio platform device: %d\n", ret); goto err_free_irq; } /* enable chicken bit; at least this is required for Dell Wyse 3040 * with DP outputs (but only sometimes by some reason!) */ I915_WRITE(VLV_AUD_CHICKEN_BIT_REG, VLV_CHICKEN_BIT_DBG_ENABLE); return 0; err_free_irq: irq_free_desc(dev_priv->lpe_audio.irq); err: dev_priv->lpe_audio.irq = -1; dev_priv->lpe_audio.platdev = NULL; return ret; }