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| author | Thomas Renninger | 2010-01-29 17:48:52 +0100 |
|---|---|---|
| committer | Len Brown | 2010-02-01 03:43:32 +0100 |
| commit | 7779688fc3d1ceddad84846a7b0affbe8e78ec6e (patch) | |
| tree | fff56e1fea8656749666280b857ecac04560e70a /drivers/pci/hotplug | |
| parent | ACPI: Add NULL pointer check in acpi_bus_start (diff) | |
| download | kernel-qcow2-linux-7779688fc3d1ceddad84846a7b0affbe8e78ec6e.tar.gz kernel-qcow2-linux-7779688fc3d1ceddad84846a7b0affbe8e78ec6e.tar.xz kernel-qcow2-linux-7779688fc3d1ceddad84846a7b0affbe8e78ec6e.zip | |
ACPI: acpi_bus_{scan,bus,add}: return -ENODEV if no device was found
Callers (acpi_memhotplug.c, dock.c and others) check for the return
value of acpi_bus_add() and assume a valid device was returned in
case zero was returned.
Thus return -ENODEV if no device was found in acpi_bus_scan and
propagate this through acpi_bus_add and acpi_bus_start.
Also remove a confusing comment in acpiphp_glue.c, acpi_bus_scan
will and cannot invoke if acpi_bus_add returns no valid device.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pci/hotplug')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 8e952fdab764..cb2fd01eddae 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -720,12 +720,6 @@ static int acpiphp_bus_add(struct acpiphp_func *func) -ret_val); goto acpiphp_bus_add_out; } - /* - * try to start anyway. We could have failed to add - * simply because this bus had previously been added - * on another add. Don't bother with the return value - * we just keep going. - */ ret_val = acpi_bus_start(device); acpiphp_bus_add_out: |