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powerpc/8xx: fix cpm_cascade() dual end of interrupt

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cpm_cascade() doesn't have to call eoi() as it is already called
by handle_fasteoi_irq()

And cpm_get_irq() will always return an unsigned int so the test
is useless

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2018-02-27 12:25:55 +01:00 committed by Michael Ellerman
parent 3d4f5f5848
commit c554ac91ce
1 changed files with 1 additions and 7 deletions
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8
arch/powerpc/platforms/8xx/m8xx_setup.c
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@ -217,13 +217,7 @@ void __noreturn mpc8xx_restart(char *cmd)
static void cpm_cascade(struct irq_desc *desc)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
int cascade_irq = cpm_get_irq();
if (cascade_irq >= 0)
generic_handle_irq(cascade_irq);
chip->irq_eoi(&desc->irq_data);
generic_handle_irq(cpm_get_irq());
}
/* Initialize the internal interrupt controllers. The number of