leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

powerpc/eeh: Remove reference to PCI device

Browse Source 
We will rely on pcibios_release_device() to remove the EEH cache
and unbind EEH device for the specific PCI device. So we shouldn't
hold the reference to the PCI device from EEH cache and EEH device.
Otherwise, pcibios_release_device() won't be called as we expected.
The patch removes the reference to the PCI device in EEH core.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan 2013-07-24 10:24:51 +08:00 committed by Benjamin Herrenschmidt
parent ee1dd1e3dc
commit 0ba178888b
2 changed files with 5 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/powerpc/kernel/eeh.c
View File

@ -499,8 +499,6 @@ unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned lon
}
eeh_dev_check_failure(edev);
pci_dev_put(eeh_dev_to_pci_dev(edev));
return val;
}
@ -904,7 +902,6 @@ static void eeh_add_device_late(struct pci_dev *dev)
}
WARN_ON(edev->pdev);
pci_dev_get(dev);
edev->pdev = dev;
dev->dev.archdata.edev = edev;
@ -992,7 +989,6 @@ static void eeh_remove_device(struct pci_dev *dev, int purge_pe)
}
edev->pdev = NULL;
dev->dev.archdata.edev = NULL;
pci_dev_put(dev);
eeh_rmv_from_parent_pe(edev, purge_pe);
eeh_addr_cache_rmv_dev(dev);

18
arch/powerpc/kernel/eeh_cache.c
View File

@ -68,16 +68,12 @@ static inline struct eeh_dev *__eeh_addr_cache_get_device(unsigned long addr)
struct pci_io_addr_range *piar;
piar = rb_entry(n, struct pci_io_addr_range, rb_node);
if (addr < piar->addr_lo) {
if (addr < piar->addr_lo)
n = n->rb_left;
} else {
if (addr > piar->addr_hi) {
n = n->rb_right;
} else {
pci_dev_get(piar->pcidev);
return piar->edev;
}
}
else if (addr > piar->addr_hi)
n = n->rb_right;
else
return piar->edev;
}
return NULL;
@ -156,7 +152,6 @@ eeh_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
if (!piar)
return NULL;
pci_dev_get(dev);
piar->addr_lo = alo;
piar->addr_hi = ahi;
piar->edev = pci_dev_to_eeh_dev(dev);
@ -250,7 +245,6 @@ restart:
if (piar->pcidev == dev) {
rb_erase(n, &pci_io_addr_cache_root.rb_root);
pci_dev_put(piar->pcidev);
kfree(piar);
goto restart;
}
@ -302,12 +296,10 @@ void eeh_addr_cache_build(void)
if (!edev)
continue;
pci_dev_get(dev); /* matching put is in eeh_remove_device() */
dev->dev.archdata.edev = edev;
edev->pdev = dev;
eeh_addr_cache_insert_dev(dev);
eeh_sysfs_add_device(dev);
}