linux-kernel - [PATCH v2 5/5] crypto: hisilicon

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Date:   Fri, 13 Aug 2021 17:50:09 +0800
From:   Weili Qian <qianweili@...wei.com>
To:     <herbert@...dor.apana.org.au>, <davem@...emloft.net>
CC:     <linux-kernel@...r.kernel.org>, <linux-crypto@...r.kernel.org>,
        <wangzhou1@...ilicon.com>, <liulongfang@...wei.com>
Subject: [PATCH v2 5/5] crypto: hisilicon - check _PS0 and _PR0 method

To support runtime PM, use the function 'pci_set_power_state' to change
the power state. Therefore, method _PS0 or _PR0 needs to be filled by
platform. So check whether the method is supported, if not, print a
prompt information.

Signed-off-by: Weili Qian <qianweili@...wei.com>
---
 drivers/crypto/hisilicon/qm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index e29ff97..369562d 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3282,6 +3282,10 @@ static void hisi_qm_pre_init(struct hisi_qm *qm)
 	init_rwsem(&qm->qps_lock);
 	qm->qp_in_used = 0;
 	qm->misc_ctl = false;
+	if (qm->fun_type == QM_HW_PF && qm->ver > QM_HW_V2) {
+		if (!acpi_device_power_manageable(ACPI_COMPANION(&pdev->dev)))
+			dev_info(&pdev->dev, "_PS0 and _PR0 are not defined");
+	}
 }
 
 static void qm_cmd_uninit(struct hisi_qm *qm)
-- 
2.8.1