From 145dcedd0e17f40bd8066a0234a19e40463367db Mon Sep 17 00:00:00 2001 From: Weili Qian Date: Sat, 11 Dec 2021 19:25:16 +0800 Subject: [PATCH] crypto: hisilicon/qm - modify the handling method after abnormal interruption After processing an interrupt event and the interrupt function is enabled by writing the QM_DOORBELL_CMD_AEQ register, the hardware may generate new interrupt events due to processing other user's task when the subsequent interrupt events have not been processed. The new interrupt event will disrupt the current normal processing flow and cause other problems. Therefore, the operation of writing the QM_DOORBELL_CMD_AEQ doorbell register needs to be placed after all interrupt events processing are completed. Signed-off-by: Weili Qian Signed-off-by: Herbert Xu --- drivers/crypto/hisilicon/qm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index d124800..beea3a0f 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -1015,10 +1015,10 @@ static irqreturn_t qm_aeq_irq(int irq, void *data) aeqe++; qm->status.aeq_head++; } - - qm_db(qm, 0, QM_DOORBELL_CMD_AEQ, qm->status.aeq_head, 0); } + qm_db(qm, 0, QM_DOORBELL_CMD_AEQ, qm->status.aeq_head, 0); + return IRQ_HANDLED; } -- 2.7.4