From: Jon Derrick Date: Tue, 30 Jun 2015 17:22:52 +0000 (-0600) Subject: NVMe: Fix irq freeing when queue_request_irq fails X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=758dd7fdffd60507624edce34fff122a63163b3f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git NVMe: Fix irq freeing when queue_request_irq fails Fixes an issue when queue_reuest_irq fails in nvme_setup_io_queues. This patch initializes all vectors to -1 and resets the vector to -1 in the case of a failure in queue_request_irq. This avoids the free_irq in nvme_suspend_queue if the queue did not get an irq. Signed-off-by: Jon Derrick Signed-off-by: Jens Axboe --- diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c index 34338d7438f5..d1d6141920d3 100644 --- a/drivers/block/nvme-core.c +++ b/drivers/block/nvme-core.c @@ -1474,6 +1474,7 @@ static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid, nvmeq->q_db = &dev->dbs[qid * 2 * dev->db_stride]; nvmeq->q_depth = depth; nvmeq->qid = qid; + nvmeq->cq_vector = -1; dev->queues[qid] = nvmeq; /* make sure queue descriptor is set before queue count, for kthread */ @@ -1726,8 +1727,10 @@ static int nvme_configure_admin_queue(struct nvme_dev *dev) nvmeq->cq_vector = 0; result = queue_request_irq(dev, nvmeq, nvmeq->irqname); - if (result) + if (result) { + nvmeq->cq_vector = -1; goto free_nvmeq; + } return result; @@ -2213,8 +2216,10 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) dev->max_qid = nr_io_queues; result = queue_request_irq(dev, adminq, adminq->irqname); - if (result) + if (result) { + adminq->cq_vector = -1; goto free_queues; + } /* Free previously allocated queues that are no longer usable */ nvme_free_queues(dev, nr_io_queues + 1);