Cleanup the -EINVAL return value handling and add warning message for invalid
start,end,addr parameters.
V2: Corrected code style and tested for Linux v 3.11-rc2
Signed-off-by: ethan.zhao <ethan.zhao@xxxxxxxxxx>
---
arch/x86/pci/mmconfig-shared.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 082e881..37f6c7f 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -700,8 +700,13 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end,
if (!(pci_probe & PCI_PROBE_MMCONF) || pci_mmcfg_arch_init_failed)
return -ENODEV;
- if (start > end)
+ if (start > end || !addr) {
+ dev_warn(dev, FW_INFO
+ "Invalid address to add MMCONFIG"
+ "start %02x end %02x addr %pR\n",
+ start, end, addr);
return -EINVAL;
+ }
mutex_lock(&pci_mmcfg_lock);
cfg = pci_mmconfig_lookup(seg, start);
@@ -716,11 +721,6 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end,
return -EEXIST;
}
- if (!addr) {
- mutex_unlock(&pci_mmcfg_lock);
- return -EINVAL;
- }
-
rc = -EBUSY;
cfg = pci_mmconfig_alloc(seg, start, end, addr);
if (cfg == NULL) {
--
1.7.1
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