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PCI: fix hotplug get_##name return value problem 

Currently, get_##name in pci_hotplug_core.c will return 0 if module
unload wins the race between unload & reading the hotplug file.  Fix
that case to return -ENODEV like it should.

Reviewed-by: Alex Chiang <achiang@hp.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Zhao, Yu 2008-09-22 14:26:05 +08:00 committed by Jesse Barnes
parent 11d587429e
commit c8761fe80e
1 changed files with 7 additions and 7 deletions
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14
drivers/pci/hotplug/pci_hotplug_core.c
View File

@ -102,13 +102,13 @@ static int get_##name (struct hotplug_slot *slot, type *value) \
{ \ { \
struct hotplug_slot_ops *ops = slot->ops; \ struct hotplug_slot_ops *ops = slot->ops; \
int retval = 0; \ int retval = 0; \
if (try_module_get(ops->owner)) { \ if (try_module_get(ops->owner)) \
if (ops->get_##name) \ return -ENODEV; \
retval = ops->get_##name(slot, value); \ if (ops->get_##name) \
else \ retval = ops->get_##name(slot, value); \
*value = slot->info->name; \ else \
module_put(ops->owner); \ *value = slot->info->name; \
} \ module_put(ops->owner); \
return retval; \ return retval; \
} }