bnx2: Drop redundant pci_enable_pcie_error_reporting()

pci_enable_pcie_error_reporting() enables the device to send ERR_*
Messages.  Since f26e58bf ("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.

cd709aa9 ("bnx2: Add PCI Advanced Error Reporting support.") added
pci_enable_pcie_error_reporting() for all devices, and c239f279 ("bnx2:
Enable AER on PCIE devices only") restricted it to BNX2_CHIP_5709 devices
to avoid an error message when it failed on non-PCIe devices.  The PCI core
only enables PCIe error reporting on PCIe devices, which I assume means
BNX2_CHIP_5709.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Rasesh Mody <rmody@marvell.com>
Cc: GR-Linux-NIC-Dev@marvell.com
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/broadcom/bnx2.c

@@ -48,7 +48,6 @@
 #include <linux/cache.h>
 #include <linux/firmware.h>
 #include <linux/log2.h>
-#include <linux/aer.h>
 #include <linux/crash_dump.h>
 
 #if IS_ENABLED(CONFIG_CNIC)
@@ -8093,7 +8092,6 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 	int rc, i, j;
 	u32 reg;
 	u64 dma_mask, persist_dma_mask;
-	int err;
 
 	SET_NETDEV_DEV(dev, &pdev->dev);
 	bp = netdev_priv(dev);
@@ -8176,12 +8174,6 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 		bp->flags |= BNX2_FLAG_PCIE;
 		if (BNX2_CHIP_REV(bp) == BNX2_CHIP_REV_Ax)
 			bp->flags |= BNX2_FLAG_JUMBO_BROKEN;
-
-		/* AER (Advanced Error Reporting) hooks */
-		err = pci_enable_pcie_error_reporting(pdev);
-		if (!err)
-			bp->flags |= BNX2_FLAG_AER_ENABLED;
-
 	} else {
 		bp->pcix_cap = pci_find_capability(pdev, PCI_CAP_ID_PCIX);
 		if (bp->pcix_cap == 0) {
@@ -8460,11 +8452,6 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
 	return 0;
 
 err_out_unmap:
-	if (bp->flags & BNX2_FLAG_AER_ENABLED) {
-		pci_disable_pcie_error_reporting(pdev);
-		bp->flags &= ~BNX2_FLAG_AER_ENABLED;
-	}
-
 	pci_iounmap(pdev, bp->regview);
 	bp->regview = NULL;
 
@@ -8638,11 +8625,6 @@ bnx2_remove_one(struct pci_dev *pdev)
 	bnx2_free_stats_blk(dev);
 	kfree(bp->temp_stats_blk);
 
-	if (bp->flags & BNX2_FLAG_AER_ENABLED) {
-		pci_disable_pcie_error_reporting(pdev);
-		bp->flags &= ~BNX2_FLAG_AER_ENABLED;
-	}
-
 	bnx2_release_firmware(bp);
 
 	free_netdev(dev);
@@ -8766,9 +8748,6 @@ static pci_ers_result_t bnx2_io_slot_reset(struct pci_dev *pdev)
 	}
 	rtnl_unlock();
 
-	if (!(bp->flags & BNX2_FLAG_AER_ENABLED))
-		return result;
-
 	return result;
 }
 

drivers/net/ethernet/broadcom/bnx2.h

@@ -6808,7 +6808,6 @@ struct bnx2 {
 #define BNX2_FLAG_JUMBO_BROKEN		0x00000800
 #define BNX2_FLAG_CAN_KEEP_VLAN		0x00001000
 #define BNX2_FLAG_BROKEN_STATS		0x00002000
-#define BNX2_FLAG_AER_ENABLED		0x00004000
 
 	struct bnx2_napi	bnx2_napi[BNX2_MAX_MSIX_VEC];