On 2012-3-22 1:04, Yinghai Lu wrote:
On Wed, Mar 21, 2012 at 9:22 AM, Jiang Liu<liuj97@xxxxxxxxx> wrote:From: Jiang Liu<liuj97@xxxxxxxxx> When hot-plugging PCI root bridge, acpi_pci_drivers' add()/remove() methods should be invoked to notify registered drivers. Signed-off-by: Jiang Liu<jiang.liu@xxxxxxxxxx> --- drivers/acpi/pci_root.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c2d2b7b..ff73357 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -445,6 +445,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) acpi_status status; int result; struct acpi_pci_root *root; + struct acpi_pci_driver *driver; acpi_handle handle; struct acpi_device *child; u32 flags, base_flags; @@ -612,6 +613,10 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) if (device->wakeup.flags.run_wake) device_set_run_wake(root->bus->bridge, true); + list_for_each_entry(driver,&acpi_pci_drivers, node) + if (driver->add) + driver->add(device->handle); + return 0;if those calling is with acpi_pci_root_start() instead of acpi_pci_root_add() Do you still need patches 3?
I think it's still needed. If driver->add is called by acpi_pci_root_add(), then acpi_pci_root_add() needs to acquire the lock too.
Yinghai .
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