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| author | Tejun Heo <htejun@gmail.com> | 2007-02-25 04:36:01 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-03-09 15:36:30 -0800 |
| commit | 7f375f325feacd8a628e00e0d53390a4f6d8abc2 (patch) | |
| tree | 434d3d5b5bf75e85515b514b12e2f08205dec079 /drivers/pci | |
| parent | a967e127d0233f2472af64597de3f3920872310c (diff) | |
| download | kernel_samsung_tuna-7f375f325feacd8a628e00e0d53390a4f6d8abc2.zip kernel_samsung_tuna-7f375f325feacd8a628e00e0d53390a4f6d8abc2.tar.gz kernel_samsung_tuna-7f375f325feacd8a628e00e0d53390a4f6d8abc2.tar.bz2 | |
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.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index df49530..a32db06 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; |