Re: Machine crashes right *after* ~successful resume

[Yinghai Lu]

On Fri, Oct 31, 2014 at 5:00 PM, Wilmer van der Gaast <wilmer@xxxxxxxxx> wrote:
> Hello,
>
> Patch #1 worked after a simple s/&&/)/. And patch #2 seems to fix the
> problem as well!

updated first #1.
---
 drivers/pci/pci.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -1265,6 +1265,24 @@ static void pci_enable_bridge(struct pci
 	pci_set_master(dev);
 }
 
+static void pci_enable_ite(struct pci_dev *dev)
+{
+	/*
+	 * FW enable the bridge already, so call pci_enable_bridge()
+	 * to keep enable_cnt consistent, then later we can go through
+	 * pci_pm_resume/pci_pm_reenable_device to enable it again.
+	 * --- for pci bridge without driver case.
+	 */
+        if (!pci_is_enabled(dev)) {
+		u16 cmd;
+
+		pci_read_config_word(dev, PCI_COMMAND, &cmd);
+		if (cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
+			pci_enable_bridge(dev);
+	}
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ITE, 0x8892, pci_enable_ite);
+
 static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
 {
 	struct pci_dev *bridge;