From: Bjorn Helgaas <bhelgaas@google.com>
Date: Tue, 7 Mar 2023 20:16:25 +0000 (-0600)
Subject: bus: mhi: host: pci_generic: Drop redundant pci_enable_pcie_error_reporting()
X-Git-Tag: v6.6.17~5000^2~32^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=45581e663703b7d36da1bc884950f199976bc8b3;p=platform%2Fkernel%2Flinux-rpi.git

bus: mhi: host: pci_generic: Drop redundant pci_enable_pcie_error_reporting()

pci_enable_pcie_error_reporting() enables the device to send ERR_*
Messages.  Since commit <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@google.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://lore.kernel.org/r/20230307201625.879567-1-helgaas@kernel.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---

diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index f39657f..6e13c43 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -8,7 +8,6 @@
  * Copyright (C) 2020 Linaro Ltd <loic.poulain@linaro.org>
  */
 
-#include <linux/aer.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/mhi.h>
@@ -903,11 +902,9 @@ static int mhi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	mhi_pdev->pci_state = pci_store_saved_state(pdev);
 	pci_load_saved_state(pdev, NULL);
 
-	pci_enable_pcie_error_reporting(pdev);
-
 	err = mhi_register_controller(mhi_cntrl, mhi_cntrl_config);
 	if (err)
-		goto err_disable_reporting;
+		return err;
 
 	/* MHI bus does not power up the controller by default */
 	err = mhi_prepare_for_power_up(mhi_cntrl);
@@ -941,8 +938,6 @@ err_unprepare:
 	mhi_unprepare_after_power_down(mhi_cntrl);
 err_unregister:
 	mhi_unregister_controller(mhi_cntrl);
-err_disable_reporting:
-	pci_disable_pcie_error_reporting(pdev);
 
 	return err;
 }
@@ -965,7 +960,6 @@ static void mhi_pci_remove(struct pci_dev *pdev)
 		pm_runtime_get_noresume(&pdev->dev);
 
 	mhi_unregister_controller(mhi_cntrl);
-	pci_disable_pcie_error_reporting(pdev);
 }
 
 static void mhi_pci_shutdown(struct pci_dev *pdev)