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authorGavin Shan <shangw@linux.vnet.ibm.com>2014-02-12 07:24:56 (GMT)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-02-17 00:19:39 (GMT)
commit66f9af83e56bfa12964d251df9d60fb571579913 (patch)
tree0e4a3439cd8b3675f5a2cac4d4a010fd00698e23 /arch/powerpc/platforms
parent2ec5a0adf60c23bb6b0a95d3b96a8c1ff1e1aa5a (diff)
powerpc/eeh: Disable EEH on reboot
We possiblly detect EEH errors during reboot, particularly in kexec path, but it's impossible for device drivers and EEH core to handle or recover them properly. The patch registers one reboot notifier for EEH and disable EEH subsystem during reboot. That means the EEH errors is going to be cleared by hardware reset or second kernel during early stage of PCI probe. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/powernv/eeh-ioda.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index fcb79cf..f514743 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -44,7 +44,8 @@ static int ioda_eeh_event(struct notifier_block *nb,
/* We simply send special EEH event */
if ((changed_evts & OPAL_EVENT_PCI_ERROR) &&
- (events & OPAL_EVENT_PCI_ERROR))
+ (events & OPAL_EVENT_PCI_ERROR) &&
+ eeh_enabled())
eeh_send_failure_event(NULL);
return 0;

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