[PATCH]: Powerpc: EEH failure to mark pci slot as frozen.

[Linas Vepstas]

Paul,
Please apply and submit upstream. Shouldn't be urgent, as
none of the existing dev drivers will be subject to this bug.

--linas

Bug fix: when marking a slot as frozen, we forgot to mark
pci device itself as frozen. (we did manage to mark the 
pci children, but forget the parent itself.)

This is needed so that some device drivers can check the 
pci status in critical sections (e.g. in spin loops with 
interrupts disabled). 

Signed-off-by: Linas Vepstas <linas at austin.ibm.com>

----
 arch/powerpc/platforms/pseries/eeh.c |    7 +++++++
 1 file changed, 7 insertions(+)

Index: linux-2.6.18-rc7-git1/arch/powerpc/platforms/pseries/eeh.c
===================================================================
--- linux-2.6.18-rc7-git1.orig/arch/powerpc/platforms/pseries/eeh.c	2006-09-20 17:18:00.000000000 -0500
+++ linux-2.6.18-rc7-git1/arch/powerpc/platforms/pseries/eeh.c	2006-09-20 17:21:04.000000000 -0500
@@ -225,6 +225,7 @@ static void __eeh_mark_slot (struct devi
 
 void eeh_mark_slot (struct device_node *dn, int mode_flag)
 {
+	struct pci_dev *dev;
 	dn = find_device_pe (dn);
 
 	/* Back up one, since config addrs might be shared */
@@ -232,6 +233,12 @@ void eeh_mark_slot (struct device_node *
 		dn = dn->parent;
 
 	PCI_DN(dn)->eeh_mode |= mode_flag;
+
+	/* Mark the pci device too */
+	dev = PCI_DN(dn)->pcidev;
+	if (dev)
+		dev->error_state = pci_channel_io_frozen;
+
 	__eeh_mark_slot (dn->child, mode_flag);
 }