From 02b6505c8f84cbb4be459c9bf8ebbb7b0754e764 Mon Sep 17 00:00:00 2001 From: Alistair Popple Date: Wed, 17 Jun 2015 11:36:57 +1000 Subject: [PATCH] powerpc/powernv: Increase opal-irqchip initcall priority The eeh subsystem for powernv requires the opal event irqchip to be initialised prior to initialisation or the following errors are produced (and eeh doesn't work as expected): irq: XICS didn't like hwirq-0x9 to VIRQ17 mapping (rc=-22) pnv_eeh_post_init: Can't request OPAL event interrupt (0) On powernv eeh is initialised from a subsys_initcall due to a check for machine_is(powernv) in eeh_init(). This patch increases the initcall priority of opal_event_init() to an arch_initcall to ensure the opal event interface is initialised prior to any users of it. Signed-off-by: Alistair Popple Reported-by: Daniel Axtens Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/opal-irqchip.c | 4 ++++ arch/powerpc/platforms/powernv/opal.c | 3 --- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c index 841135f48981..e2e7d75f52f3 100644 --- a/arch/powerpc/platforms/powernv/opal-irqchip.c +++ b/arch/powerpc/platforms/powernv/opal-irqchip.c @@ -231,6 +231,7 @@ int __init opal_event_init(void) of_node_put(opal_node); return rc; } +machine_arch_initcall(powernv, opal_event_init); /** * opal_event_request(unsigned int opal_event_nr) - Request an event @@ -244,6 +245,9 @@ int __init opal_event_init(void) */ int opal_event_request(unsigned int opal_event_nr) { + if (WARN_ON_ONCE(!opal_event_irqchip.domain)) + return NO_IRQ; + return irq_create_mapping(opal_event_irqchip.domain, opal_event_nr); } EXPORT_SYMBOL(opal_event_request); diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 9e9c483eee4d..f084afa0e3ba 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -657,9 +657,6 @@ static int __init opal_init(void) return -ENODEV; } - /* Initialise OPAL events */ - opal_event_init(); - /* Register OPAL consoles if any ports */ if (firmware_has_feature(FW_FEATURE_OPALv2)) consoles = of_find_node_by_path("/ibm,opal/consoles"); -- GitLab