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authorTejun Heo <htejun@gmail.com>2007-02-25 04:36:01 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2007-03-09 15:36:30 -0800
commit7f375f325feacd8a628e00e0d53390a4f6d8abc2 (patch)
tree434d3d5b5bf75e85515b514b12e2f08205dec079 /drivers/pci
parenta967e127d0233f2472af64597de3f3920872310c (diff)
PCI: allow multiple calls to pcim_pin_device()
Sanity check in pcim_pin_device() was too restrictive in that it didn't allow multiple calls to the function, which is against the devres philosohpy of fire-and-forget. Track pinned status separately and allow pinning multiple times. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index df495300ce3d..a32db0628157 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -757,7 +757,8 @@ int pci_enable_device(struct pci_dev *dev)
* when a device is enabled using managed PCI device enable interface.
*/
struct pci_devres {
- unsigned int disable:1;
+ unsigned int enabled:1;
+ unsigned int pinned:1;
unsigned int orig_intx:1;
unsigned int restore_intx:1;
u32 region_mask;
@@ -781,7 +782,7 @@ static void pcim_release(struct device *gendev, void *res)
if (this->restore_intx)
pci_intx(dev, this->orig_intx);
- if (this->disable)
+ if (this->enabled && !this->pinned)
pci_disable_device(dev);
}
@@ -820,12 +821,12 @@ int pcim_enable_device(struct pci_dev *pdev)
dr = get_pci_dr(pdev);
if (unlikely(!dr))
return -ENOMEM;
- WARN_ON(!!dr->disable);
+ WARN_ON(!!dr->enabled);
rc = pci_enable_device(pdev);
if (!rc) {
pdev->is_managed = 1;
- dr->disable = 1;
+ dr->enabled = 1;
}
return rc;
}
@@ -843,9 +844,9 @@ void pcim_pin_device(struct pci_dev *pdev)
struct pci_devres *dr;
dr = find_pci_dr(pdev);
- WARN_ON(!dr || !dr->disable);
+ WARN_ON(!dr || !dr->enabled);
if (dr)
- dr->disable = 0;
+ dr->pinned = 1;
}
/**
@@ -876,7 +877,7 @@ pci_disable_device(struct pci_dev *dev)
dr = find_pci_dr(dev);
if (dr)
- dr->disable = 0;
+ dr->enabled = 0;
if (atomic_sub_return(1, &dev->enable_cnt) != 0)
return;