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can: c_can_pci: enable PCI bus master only for MSI

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Coverity complains that c_can_pci_probe() calls pci_enable_msi() without
checking the result:

CID 712278 (#1 of 1): Unchecked return value (CHECKED_RETURN) 3. check_return:
Calling pci_enable_msi_block without checking return value (as is done
elsewhere 88 out of 105 times).
 88        pci_enable_msi(pdev);

This is CID 712278.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Reported-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Wolfgang Grandegger 2014-04-03 20:41:24 +02:00 committed by Marc Kleine-Budde
parent f323d7a1d2
commit 78c181bc8a
1 changed files with 5 additions and 2 deletions
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7
drivers/net/can/c_can/c_can_pci.c
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@ -84,8 +84,11 @@ static int c_can_pci_probe(struct pci_dev *pdev,
goto out_disable_device;
}
pci_set_master(pdev);
pci_enable_msi(pdev);
ret = pci_enable_msi(pdev);
if (!ret) {
dev_info(&pdev->dev, "MSI enabled\n");
pci_set_master(pdev);
}
addr = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
if (!addr) {