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authorJohannes Thumshirn <johannes.thumshirn@men.de>2015-01-12 16:26:32 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-02-03 15:48:51 -0800
commita48742bce1011d2109f6d6cbda00445aee049fd4 (patch)
tree39191dfa9b502119ddf9caa45a414486817232a2 /drivers/mcb
parentd909f4315b99e5743041eeb01a2552fcbb125c89 (diff)
downloadlwn-a48742bce1011d2109f6d6cbda00445aee049fd4.tar.gz
lwn-a48742bce1011d2109f6d6cbda00445aee049fd4.zip
mcb: Fix error path of mcb_pci_probe
If a MCB PCI Carrier device is IO mapped insted of memory-mapped (which is currently unsupported by the upstream driver) the probe function bails out with -ENOTSUPP. In this case the memory of the PCI device was not unmapped. Also rename error label to reflect what will happen at the destination (suggested by Julia Lawall <julia.lawall@lip6.fr>. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de> Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mcb')
-rw-r--r--drivers/mcb/mcb-pci.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/mcb/mcb-pci.c b/drivers/mcb/mcb-pci.c
index 5e1bd5db02c8..0af7361e377f 100644
--- a/drivers/mcb/mcb-pci.c
+++ b/drivers/mcb/mcb-pci.c
@@ -51,7 +51,7 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
priv->mapbase = pci_resource_start(pdev, 0);
if (!priv->mapbase) {
dev_err(&pdev->dev, "No PCI resource\n");
- goto err_start;
+ goto out_disable;
}
res = request_mem_region(priv->mapbase, CHAM_HEADER_SIZE,
@@ -59,14 +59,14 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (IS_ERR(res)) {
dev_err(&pdev->dev, "Failed to request PCI memory\n");
ret = PTR_ERR(res);
- goto err_start;
+ goto out_disable;
}
priv->base = ioremap(priv->mapbase, CHAM_HEADER_SIZE);
if (!priv->base) {
dev_err(&pdev->dev, "Cannot ioremap\n");
ret = -ENOMEM;
- goto err_ioremap;
+ goto out_release;
}
flags = pci_resource_flags(pdev, 0);
@@ -74,7 +74,7 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ret = -ENOTSUPP;
dev_err(&pdev->dev,
"IO mapped PCI devices are not supported\n");
- goto err_ioremap;
+ goto out_release;
}
pci_set_drvdata(pdev, priv);
@@ -82,14 +82,14 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
priv->bus = mcb_alloc_bus(&pdev->dev);
if (IS_ERR(priv->bus)) {
ret = PTR_ERR(priv->bus);
- goto err_drvdata;
+ goto out_iounmap;
}
priv->bus->get_irq = mcb_pci_get_irq;
ret = chameleon_parse_cells(priv->bus, priv->mapbase, priv->base);
if (ret < 0)
- goto err_drvdata;
+ goto out_iounmap;
num_cells = ret;
dev_dbg(&pdev->dev, "Found %d cells\n", num_cells);
@@ -98,11 +98,11 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;
-err_drvdata:
+out_iounmap:
iounmap(priv->base);
-err_ioremap:
+out_release:
pci_release_region(pdev, 0);
-err_start:
+out_disable:
pci_disable_device(pdev);
return ret;
}