Use it to skip not needed function after pcibios_fw_addr_list_del is called.
for pci root bus hot add, we will need to use pcibios_allocate_dev_resources(),
and don't want to mess up with fw_addr, for hot-add removing path.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
Cc: x...@kernel.org
---
arch/x86/pci/i386.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 42dd755..edfc376 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -51,6 +51,7 @@ struct pcibios_fwaddrmap {
static LIST_HEAD(pcibios_fwaddrmappings);
static DEFINE_SPINLOCK(pcibios_fwaddrmap_lock);
+static bool pcibios_fw_addr_done;
/* Must be called with 'pcibios_fwaddrmap_lock' lock held. */
static struct pcibios_fwaddrmap *pcibios_fwaddrmap_lookup(struct pci_dev *dev)
@@ -72,6 +73,9 @@ pcibios_save_fw_addr(struct pci_dev *dev, int idx,
resource_size_t fw_addr)
unsigned long flags;
struct pcibios_fwaddrmap *map;
+ if (pcibios_fw_addr_done)
+ return;
+
spin_lock_irqsave(&pcibios_fwaddrmap_lock, flags);
map = pcibios_fwaddrmap_lookup(dev);
if (!map) {
@@ -97,6 +101,9 @@ resource_size_t pcibios_retrieve_fw_addr(struct pci_dev
*dev, int idx)
struct pcibios_fwaddrmap *map;
resource_size_t fw_addr = 0;
+ if (pcibios_fw_addr_done)
+ return fw_addr;
+
spin_lock_irqsave(&pcibios_fwaddrmap_lock, flags);
map = pcibios_fwaddrmap_lookup(dev);
if (map)
@@ -106,7 +113,7 @@ resource_size_t pcibios_retrieve_fw_addr(struct pci_dev
*dev, int idx)
return fw_addr;
}
-static void pcibios_fw_addr_list_del(void)
+static void __init pcibios_fw_addr_list_del(void)
{
unsigned long flags;
struct pcibios_fwaddrmap *entry, *next;
@@ -118,6 +125,7 @@ static void pcibios_fw_addr_list_del(void)
kfree(entry);
}
spin_unlock_irqrestore(&pcibios_fwaddrmap_lock, flags);
+ pcibios_fw_addr_done = true;
}
static int
--
1.7.7
--
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