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xen-pciback: fix error return code in pcistub_irq_handler_switch()

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Fix to return -ENOENT in the pcistub_device_find() and pci_get_drvdata()
error handling case instead of 0(overwrite to 0 by str_to_slot()), as done
elsewhere in this function.

Acked-by: Jan Beulich <[email protected]>
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
This commit is contained in:
Wei Yongjun 2013-05-31 19:59:20 +08:00 • committed by Konrad Rzeszutek Wilk
commit 405010df1d
1 changed files with 7 additions and 3 deletions
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10
drivers/xen/xen-pciback/pci_stub.c
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@ -1196,19 +1196,23 @@ static ssize_t pcistub_irq_handler_switch(struct device_driver *drv,
struct pcistub_device *psdev;
struct xen_pcibk_dev_data *dev_data;
int domain, bus, slot, func;
int err = -ENOENT;
int err;
err = str_to_slot(buf, &domain, &bus, &slot, &func);
if (err)
return err;
psdev = pcistub_device_find(domain, bus, slot, func);
if (!psdev)
if (!psdev) {
err = -ENOENT;
goto out;
}
dev_data = pci_get_drvdata(psdev->dev);
if (!dev_data)
if (!dev_data) {
err = -ENOENT;
goto out;
}
dev_dbg(&psdev->dev->dev, "%s fake irq handler: %d->%d\n",
dev_data->irq_name, dev_data->isr_on,