powerpc/eeh: Skip eeh sysfs when eeh is disabled

When eeh is not enabled, and hotplug two pci devices on the same bus, eeh
related sysfs would be added twice for the first added pci device. Since the
eeh_dev is not created when eeh is not enabled.

This patch adds the check, if eeh is not enabled, eeh sysfs will not be
created.

After applying this patch, following warnings are reduced:

sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:00.0/eeh_mode'
sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:00.0/eeh_config_addr'
sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:00.0/eeh_pe_config_addr'

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Wei Yang 2014-06-04 09:49:17 +08:00 коммит произвёл Benjamin Herrenschmidt
Родитель 5d73320a96
Коммит 2213fb142f
1 изменённых файлов: 3 добавлений и 0 удалений

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@ -59,6 +59,9 @@ void eeh_sysfs_add_device(struct pci_dev *pdev)
struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev);
int rc=0; int rc=0;
if (!eeh_enabled())
return;
if (edev && (edev->mode & EEH_DEV_SYSFS)) if (edev && (edev->mode & EEH_DEV_SYSFS))
return; return;