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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2019-04-11 12:49:44 +0300
committerRichard Weinberger <richard@nod.at>2019-05-08 00:18:28 +0300
commit1987b1b8f9f17a06255877e7917d0bb5b5377774 (patch)
tree684d34f1abddc8a34b5dfd942af3606376048b44 /arch/um
parentea70d791c1687529edf9bb9a69530a66e1ca4584 (diff)
downloadlinux-1987b1b8f9f17a06255877e7917d0bb5b5377774.tar.xz
um: irq: don't set the chip for all irqs
Setting a chip for an interrupt marks it as allocated. Since UM doesn't support dynamic interrupt numbers (yet), it means we cannot simply increase NR_IRQS and then use the free irqs between LAST_IRQ and NR_IRQS with gpio-mockup or iio testing drivers as irq_alloc_descs() will fail after not being able to neither find an unallocated range of interrupts nor expand the range. Only call irq_set_chip_and_handler() for irqs until LAST_IRQ. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Acked-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/kernel/irq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index f4874b7ec503..598d7b3d9355 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -479,7 +479,7 @@ void __init init_IRQ(void)
irq_set_chip_and_handler(TIMER_IRQ, &SIGVTALRM_irq_type, handle_edge_irq);
- for (i = 1; i < NR_IRQS; i++)
+ for (i = 1; i < LAST_IRQ; i++)
irq_set_chip_and_handler(i, &normal_irq_type, handle_edge_irq);
/* Initialize EPOLL Loop */
os_setup_epoll();