diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2017-06-05 02:43:51 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-17 06:39:38 +0200 |
| commit | afb415f72daa0d9d8169a20f3ea3efbf05f630ca (patch) | |
| tree | fb835faaa0562ed1283c85859e5c5fb136cd075c /arch/xtensa/kernel/irq.c | |
| parent | 8b1aa267981223474cb5699b1c96eb7fa8eb08a8 (diff) | |
xtensa: don't use linux IRQ #0
commit e5c86679d5e864947a52fb31e45a425dea3e7fa9 upstream.
Linux IRQ #0 is reserved for error reporting and may not be used.
Increase NR_IRQS for one additional slot and increase
irq_domain_add_legacy parameter first_irq value to 1, so that linux
IRQ #0 is not associated with hardware IRQ #0 in legacy IRQ domains.
Introduce macro XTENSA_PIC_LINUX_IRQ for static translation of xtensa
PIC hardware IRQ # to linux IRQ #. Use this macro in XTFPGA platform
data definitions.
This fixes inability to use hardware IRQ #0 in configurations that don't
use device tree and allows for non-identity mapping between linux IRQ #
and hardware IRQ #.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/xtensa/kernel/irq.c')
| -rw-r--r-- | arch/xtensa/kernel/irq.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index 4ac3d23161cf..441694464b1e 100644 --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -34,11 +34,6 @@ asmlinkage void do_IRQ(int hwirq, struct pt_regs *regs) { int irq = irq_find_mapping(NULL, hwirq); - if (hwirq >= NR_IRQS) { - printk(KERN_EMERG "%s: cannot handle IRQ %d\n", - __func__, hwirq); - } - #ifdef CONFIG_DEBUG_STACKOVERFLOW /* Debugging check for stack overflow: is there less than 1KB free? */ { |