powerpc/eeh: Use safe list traversal when walking EEH devices
Currently, we're trasversing the EEH devices list using list_for_each_entry().
That's not safe enough because the EEH devices might be removed from
its parent PE while doing iteration. The patch replaces that with
list_for_each_entry_safe().
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index ce81477..56bd458 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -231,7 +231,7 @@
void eeh_slot_error_detail(struct eeh_pe *pe, int severity)
{
size_t loglen = 0;
- struct eeh_dev *edev;
+ struct eeh_dev *edev, *tmp;
bool valid_cfg_log = true;
/*
@@ -251,7 +251,7 @@
eeh_pe_restore_bars(pe);
pci_regs_buf[0] = 0;
- eeh_pe_for_each_dev(pe, edev) {
+ eeh_pe_for_each_dev(pe, edev, tmp) {
loglen += eeh_gather_pci_data(edev, pci_regs_buf + loglen,
EEH_PCI_REGS_LOG_LEN - loglen);
}