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irqchip/gic-v3: Fix translation of LPIs after conversion to irq_fwspec 

Commit f833f57ff2 ("irqchip: Convert all alloc/xlate users from
of_node to fwnode") converted the GICv3 driver to using irq_fwspec
as part of its 'translate' method.

Too bad it ended up with a copy of the GICv2 'translate' method,
which screws up LPI translation (by not translating them at all).

Restore the code in its original shape, and just change what is
really required...

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Duc Dang <dhdang@apm.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1444822037-16983-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Marc Zyngier 2015-10-14 12:27:16 +01:00 committed by Thomas Gleixner
parent 7e4ac676ee
commit db8c70ec1f
1 changed files with 13 additions and 9 deletions
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22
drivers/irqchip/irq-gic-v3.c
View File

@ -746,15 +746,19 @@ static int gic_irq_domain_translate(struct irq_domain *d,
if (fwspec->param_count < 3)
return -EINVAL;
/* Get the interrupt number and add 16 to skip over SGIs */
*hwirq = fwspec->param[1] + 16;
/*
* For SPIs, we need to add 16 more to get the GIC irq
* ID number
*/
if (!fwspec->param[0])
*hwirq += 16;
switch (fwspec->param[0]) {
case 0: /* SPI */
*hwirq = fwspec->param[1] + 32;
break;
case 1: /* PPI */
*hwirq = fwspec->param[1] + 16;
break;
case GIC_IRQ_TYPE_LPI: /* LPI */
*hwirq = fwspec->param[1];
break;
default:
return -EINVAL;
}
*type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
return 0;