From: Jose Abreu <jose.abreu@synopsys.com>
Date: Wed, 9 Jan 2019 10:05:56 +0100
Subject: net: stmmac: Fix PCI module removal leak
Git-commit: 6dea7e1881fd86b80da64e476ac398008daed857
Patch-mainline: v5.0-rc3
References: git-fixes

Since commit b7d0f08e9129, the enable / disable of PCI device is not
managed which will result in IO regions not being automatically unmapped.
As regions continue mapped it is currently not possible to remove and
then probe again the PCI module of stmmac.

Fix this by manually unmapping regions on remove callback.

Changes from v1:
- Fix build error

Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Fixes: b7d0f08e9129 ("net: stmmac: Fix WoL for PCI-based setups")
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -265,7 +265,17 @@ static int stmmac_pci_probe(struct pci_d
  */
 static void stmmac_pci_remove(struct pci_dev *pdev)
 {
+	int i;
+
 	stmmac_dvr_remove(&pdev->dev);
+
+	for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+		if (pci_resource_len(pdev, i) == 0)
+			continue;
+		pcim_iounmap_regions(pdev, BIT(i));
+		break;
+	}
+
 	pci_disable_device(pdev);
 }