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SubjectRe: [PATCH 4/5]pci:setup_bus.c Fix warning: variable 'retval' set but not used
On 06/18/2010 10:23 AM, Jesse Barnes wrote:
> On Tue, 15 Jun 2010 22:33:53 -0700
> "Justin P. Mattock"<justinmattock@gmail.com> wrote:
>
>> The below patch fixes a warning message when using gcc 4.6.0
>> CC drivers/pci/setup-bus.o
>> drivers/pci/setup-bus.c: In function 'pci_assign_unassigned_bridge_resources':
>> drivers/pci/setup-bus.c:868:6: warning: variable 'retval' set but not used
>>
>> Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>> drivers/pci/setup-bus.c | 2 --
>> 1 files changed, 0 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
>> index 19b1113..215590b 100644
>> --- a/drivers/pci/setup-bus.c
>> +++ b/drivers/pci/setup-bus.c
>> @@ -865,7 +865,6 @@ void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)
>> struct pci_bus *parent = bridge->subordinate;
>> int tried_times = 0;
>> struct resource_list_x head, *list;
>> - int retval;
>> unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM |
>> IORESOURCE_PREFETCH;
>>
>> @@ -874,7 +873,6 @@ void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)
>> again:
>> pci_bus_size_bridges(parent);
>> __pci_bridge_assign_resources(bridge,&head);
>> - retval = pci_reenable_device(bridge);
>> pci_set_master(bridge);
>> pci_enable_bridges(parent);
>>
>
> This has the same problem as your earlier bridge_enable patch; you need
> to keep the call to pci_reenable_device. I should have caught this
> issue when Yinghai's patch went in: the right way to silence a warning
> about not checking a return value isn't to simply assign it to
> something, you really should *do* something as well, at least some
> debug output would be nice, but ideally handling the error in a sane
> way.
>


yeah I was still looking into the scsi patch with adding a printk
then I can look at this as well.

Justin P. Mattock


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