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pci: allow multiple calls to pcim_enable_device() 

There's no reason not to allow multiple calls to pcim_enable_device().
Calls after the first one can simply be noop.  All PCI resources will
be released when the initial pcim_enable_device() resource is
released.

This allows more flexibility to managed PCI users.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Tejun Heo 2008-01-30 18:20:04 +09:00 committed by Jeff Garzik
parent 9f24e82d07
commit b95d58eaf2
1 changed files with 2 additions and 1 deletions
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3
drivers/pci/pci.c
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@ -823,7 +823,8 @@ int pcim_enable_device(struct pci_dev *pdev)
dr = get_pci_dr(pdev);
if (unlikely(!dr))
return -ENOMEM;
WARN_ON(!!dr->enabled);
if (dr->enabled)
return 0;
rc = pci_enable_device(pdev);
if (!rc) {