diff options
| author |   Weili Qian <qianweili@huawei.com> | 2021-12-11 19:25:17 +0800 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2021-12-17 16:59:49 +1100 |
| commit | a0a9486bebc43679ec9ded50ac6b93330c4b930f (patch) | |
| tree | ffbfda64592eab3094b7eac7b874814d8387faf5 /drivers/crypto/hisilicon/qm.c | |
| parent | crypto: hisilicon/qm - modify the handling method after abnormal interruption (diff) | |
| download | linux-dev-a0a9486bebc43679ec9ded50ac6b93330c4b930f.tar.xz linux-dev-a0a9486bebc43679ec9ded50ac6b93330c4b930f.zip | |
crypto: hisilicon/qm - use request_threaded_irq instead
The abnormal interrupt method needs to be changed, and the changed method
needs to be locked in order to maintain atomicity. Therefore,
replace request_irq() with request_threaded_irq().
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | drivers/crypto/hisilicon/qm.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index beea3a0fd0a5..93abe1feb0b7 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -988,16 +988,12 @@ static void qm_set_qp_disable(struct hisi_qp *qp, int offset) mb(); } -static irqreturn_t qm_aeq_irq(int irq, void *data) +static irqreturn_t qm_aeq_thread(int irq, void *data) { struct hisi_qm *qm = data; struct qm_aeqe *aeqe = qm->aeqe + qm->status.aeq_head; u32 type; - atomic64_inc(&qm->debug.dfx.aeq_irq_cnt); - if (!readl(qm->io_base + QM_VF_AEQ_INT_SOURCE)) - return IRQ_NONE; - while (QM_AEQE_PHASE(aeqe) == qm->status.aeqc_phase) { type = le32_to_cpu(aeqe->dw0) >> QM_AEQE_TYPE_SHIFT; if (type < ARRAY_SIZE(qm_fifo_overflow)) @@ -1022,6 +1018,17 @@ static irqreturn_t qm_aeq_irq(int irq, void *data) return IRQ_HANDLED; } +static irqreturn_t qm_aeq_irq(int irq, void *data) +{ + struct hisi_qm *qm = data; + + atomic64_inc(&qm->debug.dfx.aeq_irq_cnt); + if (!readl(qm->io_base + QM_VF_AEQ_INT_SOURCE)) + return IRQ_NONE; + + return IRQ_WAKE_THREAD; +} + static void qm_irq_unregister(struct hisi_qm *qm) { struct pci_dev *pdev = qm->pdev; @@ -5299,8 +5306,10 @@ static int qm_irq_register(struct hisi_qm *qm) return ret; if (qm->ver > QM_HW_V1) { - ret = request_irq(pci_irq_vector(pdev, QM_AEQ_EVENT_IRQ_VECTOR), - qm_aeq_irq, 0, qm->dev_name, qm); + ret = request_threaded_irq(pci_irq_vector(pdev, + QM_AEQ_EVENT_IRQ_VECTOR), + qm_aeq_irq, qm_aeq_thread, + 0, qm->dev_name, qm); if (ret) goto err_aeq_irq; |