[PATCH 4.9 244/310] net: ena: add missing unmap bars on device removal

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Netanel Belgazal <neta...@amazon.com>


[ Upstream commit 0857d92f71b6cb75281fde913554b2d5436c394b ]

This patch also change the mapping functions to devm_ functions

Fixes: 1738cd3ed342 ("Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Netanel Belgazal <neta...@amazon.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/ethernet/amazon/ena/ena_netdev.c |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -2808,6 +2808,11 @@ static void ena_release_bars(struct ena_
 {
        int release_bars;
 
+       if (ena_dev->mem_bar)
+               devm_iounmap(&pdev->dev, ena_dev->mem_bar);
+
+       devm_iounmap(&pdev->dev, ena_dev->reg_bar);
+
        release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & ENA_BAR_MASK;
        pci_release_selected_regions(pdev, release_bars);
 }
@@ -2895,8 +2900,9 @@ static int ena_probe(struct pci_dev *pde
                goto err_free_ena_dev;
        }
 
-       ena_dev->reg_bar = ioremap(pci_resource_start(pdev, ENA_REG_BAR),
-                                  pci_resource_len(pdev, ENA_REG_BAR));
+       ena_dev->reg_bar = devm_ioremap(&pdev->dev,
+                                       pci_resource_start(pdev, ENA_REG_BAR),
+                                       pci_resource_len(pdev, ENA_REG_BAR));
        if (!ena_dev->reg_bar) {
                dev_err(&pdev->dev, "failed to remap regs bar\n");
                rc = -EFAULT;
@@ -2916,8 +2922,9 @@ static int ena_probe(struct pci_dev *pde
        ena_set_push_mode(pdev, ena_dev, &get_feat_ctx);
 
        if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
-               ena_dev->mem_bar = ioremap_wc(pci_resource_start(pdev, 
ENA_MEM_BAR),
-                                             pci_resource_len(pdev, 
ENA_MEM_BAR));
+               ena_dev->mem_bar = devm_ioremap_wc(&pdev->dev,
+                                                  pci_resource_start(pdev, 
ENA_MEM_BAR),
+                                                  pci_resource_len(pdev, 
ENA_MEM_BAR));
                if (!ena_dev->mem_bar) {
                        rc = -EFAULT;
                        goto err_device_destroy;