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| author | Yinghai Lu <yinghai@kernel.org> | 2012-02-04 22:55:00 -0800 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-02-10 12:19:31 -0800 |
| commit | 3682a3946d2b0bad621db871e3bead83e523a238 (patch) | |
| tree | 22fa013f268abeb35863ac7be2016912c4977762 /drivers/pci | |
| parent | 8161fe91d8da34c1a231b6e2d4454b4b3179a5d4 (diff) | |
| download | linux-stable-3682a3946d2b0bad621db871e3bead83e523a238.tar.gz linux-stable-3682a3946d2b0bad621db871e3bead83e523a238.tar.bz2 linux-stable-3682a3946d2b0bad621db871e3bead83e523a238.zip | |
PCI: Fix pci cardbus removal
During test busn_res allocation with cardbus, found pci card removal is not
working anymore, and it turns out it is broken by:
|commit 79cc9601c3e42b4f0650fe7e69132ebce7ab48f9
|Date: Tue Nov 22 21:06:53 2011 -0800
|
| PCI: Only call pci_stop_bus_device() one time for child devices at remove
The above changed the behavior of pci_remove_behind_bridge that
yenta_cardbus depended on. So restore the old behavoir of
pci_remove_behind_bridge (which requires stopping and removing of all
devices) by:
1. rename pci_remove_behind_bridge to __pci_remove_behind_bridge, and let
__pci_remove_bus_device() call it instead.
2. add pci_stop_behind_bridge that will stop devices behind a bridge
3. add back pci_remove_behind_bridge that will stop and remove devices
under bridge.
-v2: update commit description a little bit.
Tested-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/remove.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index 6def3624c688..ef8b18c48f26 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -77,6 +77,7 @@ void pci_remove_bus(struct pci_bus *pci_bus) } EXPORT_SYMBOL(pci_remove_bus); +static void __pci_remove_behind_bridge(struct pci_dev *dev); /** * pci_remove_bus_device - remove a PCI device and any children * @dev: the device to remove @@ -94,7 +95,7 @@ static void __pci_remove_bus_device(struct pci_dev *dev) if (dev->subordinate) { struct pci_bus *b = dev->subordinate; - pci_remove_behind_bridge(dev); + __pci_remove_behind_bridge(dev); pci_remove_bus(b); dev->subordinate = NULL; } @@ -107,6 +108,24 @@ void pci_remove_bus_device(struct pci_dev *dev) __pci_remove_bus_device(dev); } +static void __pci_remove_behind_bridge(struct pci_dev *dev) +{ + struct list_head *l, *n; + + if (dev->subordinate) + list_for_each_safe(l, n, &dev->subordinate->devices) + __pci_remove_bus_device(pci_dev_b(l)); +} + +static void pci_stop_behind_bridge(struct pci_dev *dev) +{ + struct list_head *l, *n; + + if (dev->subordinate) + list_for_each_safe(l, n, &dev->subordinate->devices) + pci_stop_bus_device(pci_dev_b(l)); +} + /** * pci_remove_behind_bridge - remove all devices behind a PCI bridge * @dev: PCI bridge device @@ -117,11 +136,8 @@ void pci_remove_bus_device(struct pci_dev *dev) */ void pci_remove_behind_bridge(struct pci_dev *dev) { - struct list_head *l, *n; - - if (dev->subordinate) - list_for_each_safe(l, n, &dev->subordinate->devices) - __pci_remove_bus_device(pci_dev_b(l)); + pci_stop_behind_bridge(dev); + __pci_remove_behind_bridge(dev); } static void pci_stop_bus_devices(struct pci_bus *bus) |