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hpsim, initialize chip for assigned irqs

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Currently, when assign_irq_vector is called and the irq connected in
the simulator, the irq is not ready. request_irq will return ENOSYS
immediately. It is because the irq chip is unset.

Hence set the chip properly to irq_type_hp_sim. And make sure this is
done from both users of simulated interrupts.

Also we have to set handler here, otherwise we end up in
handle_bad_int resulting in spam in logs and no irqs handled. We use
handle_simple_irq as these are SW interrupts that need no ACK or
anything.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2012-03-08 21:01:18 +01:00
committed by Greg Kroah-Hartman
parent 035cfe5ac5
commit 6efb6b77ff
5 changed files with 35 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
arch/ia64/hp/sim/hpsim_irq.c
View File

@@ -10,6 +10,8 @@
#include <linux/sched.h>
#include <linux/irq.h>
#include "hpsim_ssc.h"
static unsigned int
hpsim_irq_startup(struct irq_data *data)
{
@@ -37,15 +39,37 @@ static struct irq_chip irq_type_hp_sim = {
.irq_set_affinity = hpsim_set_affinity_noop,
};
static void hpsim_irq_set_chip(int irq)
{
struct irq_chip *chip = irq_get_chip(irq);
if (chip == &no_irq_chip)
irq_set_chip(irq, &irq_type_hp_sim);
}
static void hpsim_connect_irq(int intr, int irq)
{
ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
}
int hpsim_get_irq(int intr)
{
int irq = assign_irq_vector(AUTO_ASSIGN);
if (irq >= 0) {
hpsim_irq_set_chip(irq);
irq_set_handler(irq, handle_simple_irq);
hpsim_connect_irq(intr, irq);
}
return irq;
}
void __init
hpsim_irq_init (void)
{
int i;
for_each_active_irq(i) {
struct irq_chip *chip = irq_get_chip(i);
if (chip == &no_irq_chip)
irq_set_chip(i, &irq_type_hp_sim);
}
for_each_active_irq(i)
hpsim_irq_set_chip(i);
}