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| author | Weili Qian <qianweili@huawei.com> | 2023-07-14 19:41:35 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-07-22 13:59:38 +1200 |
| commit | 5cd4ed98cfb743cd8f363ccc674313c14c17acd5 (patch) | |
| tree | 2f83044c07fac4eaa4fa28c01c046d3a2011358c /drivers/crypto/hisilicon/qm.c | |
| parent | 1e3b2e805587ab5aa3ecdfe6339ad120ceaef7d3 (diff) | |
| download | linux-stable-5cd4ed98cfb743cd8f363ccc674313c14c17acd5.tar.gz linux-stable-5cd4ed98cfb743cd8f363ccc674313c14c17acd5.tar.bz2 linux-stable-5cd4ed98cfb743cd8f363ccc674313c14c17acd5.zip | |
crypto: hisilicon/qm - flush all work before driver removed
Before removing the driver, flush inter-function communication
work, and subsequent communication work is not processed.
This prevents communication threads from accessing released memory.
Fixes: ("crypto: hisilicon/qm - enable PF and VFs communication")
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/hisilicon/qm.c')
| -rw-r--r-- | drivers/crypto/hisilicon/qm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index edc6fd44e7ca..81c21ca40375 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -954,6 +954,11 @@ static irqreturn_t qm_mb_cmd_irq(int irq, void *data) if (!val) return IRQ_NONE; + if (test_bit(QM_DRIVER_REMOVING, &qm->misc_ctl)) { + dev_warn(&qm->pdev->dev, "Driver is down, message cannot be processed!\n"); + return IRQ_HANDLED; + } + schedule_work(&qm->cmd_process); return IRQ_HANDLED; @@ -2743,6 +2748,9 @@ void hisi_qm_wait_task_finish(struct hisi_qm *qm, struct hisi_qm_list *qm_list) test_bit(QM_RESETTING, &qm->misc_ctl)) msleep(WAIT_PERIOD); + if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) + flush_work(&qm->cmd_process); + udelay(REMOVE_WAIT_DELAY); } EXPORT_SYMBOL_GPL(hisi_qm_wait_task_finish); |