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@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index e29ff97..369562d 100644 (file)
--- 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)