Re: Fix get_##name return value problem

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On Monday, September 29, 2008 1:37 am Kenji Kaneshige wrote:
> Jesse Barnes wrote:
> > On Sunday, September 21, 2008 11:26 pm Zhao, Yu wrote:
> >> The get_##name in pci_hotplug_core.c always returns 0, which fails its
> >> callers to conclude right operations. Change it to return proper values
> >> on failure.
> >>
> >> Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>
> >
> > Applied to linux-next, thanks.
> >
> > Jesse
> > --
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>
> The commit 356a9d6f3dd283f83861adf1ac909879f0e66411 (PCI: fix hotplug
> get_##name return value problem) doesn't seem to be merged properly.
> Because of this, PCI hotplug no longer works (Read/Write PCI hotplug
> files always returns -ENODEV).
>
> The following patch fixes this problem.
>
> Thanks,
> Kenji Kaneshige
>
>
> This patch fixes wrong check of try_module_get() return value check in
> get_##name().
>
> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
>
> ---
>  drivers/pci/hotplug/pci_hotplug_core.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: linux-next/drivers/pci/hotplug/pci_hotplug_core.c
> ===================================================================
> --- linux-next.orig/drivers/pci/hotplug/pci_hotplug_core.c
> +++ linux-next/drivers/pci/hotplug/pci_hotplug_core.c
> @@ -102,7 +102,7 @@ static int get_##name (struct hotplug_sl
>  {									\
>  	struct hotplug_slot_ops *ops = slot->ops;			\
>  	int retval = 0;							\
> -	if (try_module_get(ops->owner))					\
> +	if (!try_module_get(ops->owner))				\
>  		return -ENODEV;						\
>  	if (ops->get_##name)						\
>  		retval = ops->get_##name(slot, value);			\

Oops, thanks for the fix.  Applied to linux-next.

Thanks,
Jesse

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