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| author | Rafael J. Wysocki | 2013-06-16 00:36:41 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki | 2013-06-20 01:25:19 +0200 |
| commit | 24071f472d813fccacc1ef7356b1f41422a1b968 (patch) | |
| tree | ecff2a9d976919b434a2a410d03317a1b8e0ea3a /drivers/acpi/scan.c | |
| parent | ACPI / ia64 / sba_iommu: Use ACPI scan handler for device discovery (diff) | |
| download | kernel-qcow2-linux-24071f472d813fccacc1ef7356b1f41422a1b968.tar.gz kernel-qcow2-linux-24071f472d813fccacc1ef7356b1f41422a1b968.tar.xz kernel-qcow2-linux-24071f472d813fccacc1ef7356b1f41422a1b968.zip | |
ACPI / scan: Do not bind ACPI drivers to objects with scan handlers
ACPI drivers must not be bound to device objects having scan handlers
attatched to them, so make acpi_device_probe() fail with -EINVAL if the
device object being probed has an ACPI scan handler.
After this change the analogous check introduced into the ACPI video
driver by commit 8c9b7a7 (ACPI / video: Do not bind to device objects
with a scan handler) is not necessary any more and may be dropped, so
drop it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Tony Luck <tony.luck@gmail.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Diffstat (limited to 'drivers/acpi/scan.c')
| -rw-r--r-- | drivers/acpi/scan.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 4eeea2262454..54529424a0a5 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -822,6 +822,9 @@ static int acpi_device_probe(struct device *dev) struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver); int ret; + if (acpi_dev->handler) + return -EINVAL; + if (!acpi_drv->ops.add) return -ENOSYS; |