diff options
| -rw-r--r-- | drivers/pci/pcie/pme.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index fafdb165dd2e..df290aa58dce 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -226,6 +226,9 @@ static void pcie_pme_work_fn(struct work_struct *work) break; pcie_capability_read_dword(port, PCI_EXP_RTSTA, &rtsta); + if (rtsta == (u32) ~0) + break; + if (rtsta & PCI_EXP_RTSTA_PME) { /* * Clear PME status of the port. If there are other @@ -273,7 +276,7 @@ static irqreturn_t pcie_pme_irq(int irq, void *context) spin_lock_irqsave(&data->lock, flags); pcie_capability_read_dword(port, PCI_EXP_RTSTA, &rtsta); - if (!(rtsta & PCI_EXP_RTSTA_PME)) { + if (rtsta == (u32) ~0 || !(rtsta & PCI_EXP_RTSTA_PME)) { spin_unlock_irqrestore(&data->lock, flags); return IRQ_NONE; } |