[PATCH 1/6] crypto: qat - drop redundant adf_enable_aer()

[Bjorn Helgaas]

From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>

pci_enable_pcie_error_reporting() enables the device to send ERR_*
Messages.  Since f26e58bf6f54 ("PCI/AER: Enable error reporting when AER is
native"), the PCI core does this for all devices during enumeration, so the
driver doesn't need to do it itself.

Remove the redundant pci_enable_pcie_error_reporting() call from the
driver.  Also remove the corresponding pci_disable_pcie_error_reporting()
from the driver .remove() path.

Note that this only controls ERR_* Messages from the device.  An ERR_*
Message may cause the Root Port to generate an interrupt, depending on the
AER Root Error Command register managed by the AER service driver.

Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
Cc: qat-linux@xxxxxxxxx
---
 drivers/crypto/qat/qat_4xxx/adf_drv.c         | 11 ++----
 drivers/crypto/qat/qat_c3xxx/adf_drv.c        |  9 ++---
 drivers/crypto/qat/qat_c62x/adf_drv.c         |  9 ++---
 drivers/crypto/qat/qat_common/adf_aer.c       | 35 -------------------
 .../crypto/qat/qat_common/adf_common_drv.h    |  2 --
 drivers/crypto/qat/qat_dh895xcc/adf_drv.c     |  9 ++---
 6 files changed, 9 insertions(+), 66 deletions(-)

diff --git a/drivers/crypto/qat/qat_4xxx/adf_drv.c b/drivers/crypto/qat/qat_4xxx/adf_drv.c
index b3a4c7b23864..025de43a572b 100644
--- a/drivers/crypto/qat/qat_4xxx/adf_drv.c
+++ b/drivers/crypto/qat/qat_4xxx/adf_drv.c
@@ -403,21 +403,19 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pci_set_master(pdev);
 
-	adf_enable_aer(accel_dev);
-
 	if (pci_save_state(pdev)) {
 		dev_err(&pdev->dev, "Failed to save pci state.\n");
 		ret = -ENOMEM;
-		goto out_err_disable_aer;
+		goto out_err;
 	}
 
 	ret = adf_sysfs_init(accel_dev);
 	if (ret)
-		goto out_err_disable_aer;
+		goto out_err;
 
 	ret = hw_data->dev_config(accel_dev);
 	if (ret)
-		goto out_err_disable_aer;
+		goto out_err;
 
 	ret = adf_dev_init(accel_dev);
 	if (ret)
@@ -433,8 +431,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	adf_dev_stop(accel_dev);
 out_err_dev_shutdown:
 	adf_dev_shutdown(accel_dev);
-out_err_disable_aer:
-	adf_disable_aer(accel_dev);
 out_err:
 	adf_cleanup_accel(accel_dev);
 	return ret;
@@ -450,7 +446,6 @@ static void adf_remove(struct pci_dev *pdev)
 	}
 	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
-	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);
 }
 
diff --git a/drivers/crypto/qat/qat_c3xxx/adf_drv.c b/drivers/crypto/qat/qat_c3xxx/adf_drv.c
index 1f4fbf4562b2..17a390718b10 100644
--- a/drivers/crypto/qat/qat_c3xxx/adf_drv.c
+++ b/drivers/crypto/qat/qat_c3xxx/adf_drv.c
@@ -193,17 +193,15 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 	pci_set_master(pdev);
 
-	adf_enable_aer(accel_dev);
-
 	if (pci_save_state(pdev)) {
 		dev_err(&pdev->dev, "Failed to save pci state\n");
 		ret = -ENOMEM;
-		goto out_err_disable_aer;
+		goto out_err_free_reg;
 	}
 
 	ret = hw_data->dev_config(accel_dev);
 	if (ret)
-		goto out_err_disable_aer;
+		goto out_err_free_reg;
 
 	ret = adf_dev_init(accel_dev);
 	if (ret)
@@ -219,8 +217,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	adf_dev_stop(accel_dev);
 out_err_dev_shutdown:
 	adf_dev_shutdown(accel_dev);
-out_err_disable_aer:
-	adf_disable_aer(accel_dev);
 out_err_free_reg:
 	pci_release_regions(accel_pci_dev->pci_dev);
 out_err_disable:
@@ -241,7 +237,6 @@ static void adf_remove(struct pci_dev *pdev)
 	}
 	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
-	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);
 	adf_cleanup_pci_dev(accel_dev);
 	kfree(accel_dev);
diff --git a/drivers/crypto/qat/qat_c62x/adf_drv.c b/drivers/crypto/qat/qat_c62x/adf_drv.c
index 4ccaf298250c..fd799044cdd7 100644
--- a/drivers/crypto/qat/qat_c62x/adf_drv.c
+++ b/drivers/crypto/qat/qat_c62x/adf_drv.c
@@ -193,17 +193,15 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 	pci_set_master(pdev);
 
-	adf_enable_aer(accel_dev);
-
 	if (pci_save_state(pdev)) {
 		dev_err(&pdev->dev, "Failed to save pci state\n");
 		ret = -ENOMEM;
-		goto out_err_disable_aer;
+		goto out_err_free_reg;
 	}
 
 	ret = hw_data->dev_config(accel_dev);
 	if (ret)
-		goto out_err_disable_aer;
+		goto out_err_free_reg;
 
 	ret = adf_dev_init(accel_dev);
 	if (ret)
@@ -219,8 +217,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	adf_dev_stop(accel_dev);
 out_err_dev_shutdown:
 	adf_dev_shutdown(accel_dev);
-out_err_disable_aer:
-	adf_disable_aer(accel_dev);
 out_err_free_reg:
 	pci_release_regions(accel_pci_dev->pci_dev);
 out_err_disable:
@@ -241,7 +237,6 @@ static void adf_remove(struct pci_dev *pdev)
 	}
 	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
-	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);
 	adf_cleanup_pci_dev(accel_dev);
 	kfree(accel_dev);
diff --git a/drivers/crypto/qat/qat_common/adf_aer.c b/drivers/crypto/qat/qat_common/adf_aer.c
index fe9bb2f3536a..bb7289032088 100644
--- a/drivers/crypto/qat/qat_common/adf_aer.c
+++ b/drivers/crypto/qat/qat_common/adf_aer.c
@@ -2,7 +2,6 @@
 /* Copyright(c) 2014 - 2020 Intel Corporation */
 #include <linux/kernel.h>
 #include <linux/pci.h>
-#include <linux/aer.h>
 #include <linux/completion.h>
 #include <linux/workqueue.h>
 #include <linux/delay.h>
@@ -173,40 +172,6 @@ const struct pci_error_handlers adf_err_handler = {
 };
 EXPORT_SYMBOL_GPL(adf_err_handler);
 
-/**
- * adf_enable_aer() - Enable Advance Error Reporting for acceleration device
- * @accel_dev:  Pointer to acceleration device.
- *
- * Function enables PCI Advance Error Reporting for the
- * QAT acceleration device accel_dev.
- * To be used by QAT device specific drivers.
- */
-void adf_enable_aer(struct adf_accel_dev *accel_dev)
-{
-	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
-
-	pci_enable_pcie_error_reporting(pdev);
-}
-EXPORT_SYMBOL_GPL(adf_enable_aer);
-
-/**
- * adf_disable_aer() - Disable Advance Error Reporting for acceleration device
- * @accel_dev:  Pointer to acceleration device.
- *
- * Function disables PCI Advance Error Reporting for the
- * QAT acceleration device accel_dev.
- * To be used by QAT device specific drivers.
- *
- * Return: void
- */
-void adf_disable_aer(struct adf_accel_dev *accel_dev)
-{
-	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
-
-	pci_disable_pcie_error_reporting(pdev);
-}
-EXPORT_SYMBOL_GPL(adf_disable_aer);
-
 int adf_init_aer(void)
 {
 	device_reset_wq = alloc_workqueue("qat_device_reset_wq",
diff --git a/drivers/crypto/qat/qat_common/adf_common_drv.h b/drivers/crypto/qat/qat_common/adf_common_drv.h
index 7189265573c0..13f32c7b13fa 100644
--- a/drivers/crypto/qat/qat_common/adf_common_drv.h
+++ b/drivers/crypto/qat/qat_common/adf_common_drv.h
@@ -88,8 +88,6 @@ int adf_ae_start(struct adf_accel_dev *accel_dev);
 int adf_ae_stop(struct adf_accel_dev *accel_dev);
 
 extern const struct pci_error_handlers adf_err_handler;
-void adf_enable_aer(struct adf_accel_dev *accel_dev);
-void adf_disable_aer(struct adf_accel_dev *accel_dev);
 void adf_reset_sbr(struct adf_accel_dev *accel_dev);
 void adf_reset_flr(struct adf_accel_dev *accel_dev);
 void adf_dev_restore(struct adf_accel_dev *accel_dev);
diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
index ebeb17b67fcd..feb6e000cc6d 100644
--- a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
+++ b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
@@ -193,17 +193,15 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 	pci_set_master(pdev);
 
-	adf_enable_aer(accel_dev);
-
 	if (pci_save_state(pdev)) {
 		dev_err(&pdev->dev, "Failed to save pci state\n");
 		ret = -ENOMEM;
-		goto out_err_disable_aer;
+		goto out_err_free_reg;
 	}
 
 	ret = hw_data->dev_config(accel_dev);
 	if (ret)
-		goto out_err_disable_aer;
+		goto out_err_free_reg;
 
 	ret = adf_dev_init(accel_dev);
 	if (ret)
@@ -219,8 +217,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	adf_dev_stop(accel_dev);
 out_err_dev_shutdown:
 	adf_dev_shutdown(accel_dev);
-out_err_disable_aer:
-	adf_disable_aer(accel_dev);
 out_err_free_reg:
 	pci_release_regions(accel_pci_dev->pci_dev);
 out_err_disable:
@@ -241,7 +237,6 @@ static void adf_remove(struct pci_dev *pdev)
 	}
 	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
-	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);
 	adf_cleanup_pci_dev(accel_dev);
 	kfree(accel_dev);
-- 
2.25.1