Re: [PATCH v10 2/4] PCI: Change pbus_size_mem() return values to be more conventional

[Wei Yang <weiyang@linux.vnet.ibm.com>]

On Mon, May 19, 2014 at 09:45:58PM -0600, Bjorn Helgaas wrote:
>pbus_size_mem() previously returned 0 for failure and 1 for success.
>Change it to return -ENOSPC for failure and 0 for success.
>
>No functional change.
>
>Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
>---
> drivers/pci/setup-bus.c |   35 +++++++++++++++++++++--------------
> 1 file changed, 21 insertions(+), 14 deletions(-)
>
>diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
>index 589f2261ab0e..caa07fe6a23a 100644
>--- a/drivers/pci/setup-bus.c
>+++ b/drivers/pci/setup-bus.c
>@@ -915,6 +915,10 @@ static inline resource_size_t calculate_mem_align(resource_size_t *aligns,
>  *
>  * Calculate the size of the bus and minimal alignment which
>  * guarantees that all child resources fit in this size.
>+ *
>+ * Returns -ENOSPC 0 if there's no available bus resource of the desired type.
                    ^^^
One small question, the 0 here means?


-- 
Richard Yang
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