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Commit e6f07759 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
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sh: fix INTC to use set_irq_chained_handler() for redirects 



This patch updates the shared INTC code to use
set_irq_chained_handler() for intc_redirect_irq().

With this in place request_irq() on a merged irq
which has been redirected will now return -EINVAL
instead of 0 together with a crash. This thanks to
the protection of the IRQ_NOREQUEST flag set for
chained interrupt handlers.

Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 3844eadc

drivers/sh/intc.c

+2 −2
Original line number Diff line number Diff line
@@ -896,8 +896,8 @@ void __init register_intc_controller(struct intc_desc *desc) 
			vect2->enum_id = 0;



			/* redirect this interrupts to the first one */

			set_irq_chip_and_handler_name(irq2, &d->chip,

					intc_redirect_irq, "redirect");

			set_irq_chained_handler(irq2, intc_redirect_irq);

			set_irq_chip(irq2, &d->chip);

			set_irq_data(irq2, (void *)irq);

		}

	}