linux-kernel - [PATCH 5.4 135/203] PCI: Fix missing bridge dma

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Message-Id: <20200116231756.875627199@linuxfoundation.org>
Date:   Fri, 17 Jan 2020 00:17:32 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Srinath Mannam <srinath.mannam@...adcom.com>
Subject: [PATCH 5.4 135/203] PCI: Fix missing bridge dma_ranges resource list cleanup

From: Rob Herring <robh@...nel.org>

commit 7608158df3ed87a5c938c4a0b91f5b11101a9be1 upstream.

Commit e80a91ad302b ("PCI: Add dma_ranges window list") added a
dma_ranges resource list, but failed to correctly free the list when
devm_pci_alloc_host_bridge() is used.

Only the iproc host bridge driver is using the dma_ranges list.

Fixes: e80a91ad302b ("PCI: Add dma_ranges window list")
Link: https://lore.kernel.org/r/20191008012325.25700-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@...nel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Srinath Mannam <srinath.mannam@...adcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pci/probe.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -572,6 +572,7 @@ static void devm_pci_release_host_bridge
 		bridge->release_fn(bridge);
 
 	pci_free_resource_list(&bridge->windows);
+	pci_free_resource_list(&bridge->dma_ranges);
 }
 
 static void pci_release_host_bridge_dev(struct device *dev)