Messages in this thread Patch in this message | | | From | Ludovic Desroches <> | Subject | [PATCH 1/3] irqchip: atmel-aic5: fix bug with mask/unmask | Date | Mon, 21 Sep 2015 15:46:04 +0200 |
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When masking/unmasking interrupts, mask_cache is updated and used later for suspend/resume. Unfortunately, it always was the mask_cache associated with the first irq chip which was updated. So when performing resume, only irqs 0-31 could be enabled and maybe not the good ones!
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Fixes: b1479ebb7720 ("irqchip: atmel-aic: Add atmel AIC/AIC5 drivers") Cc: stable@vger.kernel.org #3.18 ---
Sasha,
This fix won't apply without conflicts because of irq_reg_writel changes. I can provide you a fix for 3.18 if you need.
Regards
Ludovic
drivers/irqchip/irq-atmel-aic5.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/irqchip/irq-atmel-aic5.c b/drivers/irqchip/irq-atmel-aic5.c index 9da9942..6c5fd25 100644 --- a/drivers/irqchip/irq-atmel-aic5.c +++ b/drivers/irqchip/irq-atmel-aic5.c @@ -88,28 +88,30 @@ static void aic5_mask(struct irq_data *d) { struct irq_domain *domain = d->domain; struct irq_domain_chip_generic *dgc = domain->gc; - struct irq_chip_generic *gc = dgc->gc[0]; + struct irq_chip_generic *bgc = dgc->gc[0]; + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); /* Disable interrupt on AIC5 */ - irq_gc_lock(gc); + irq_gc_lock(bgc); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR); irq_reg_writel(gc, 1, AT91_AIC5_IDCR); gc->mask_cache &= ~d->mask; - irq_gc_unlock(gc); + irq_gc_unlock(bgc); } static void aic5_unmask(struct irq_data *d) { struct irq_domain *domain = d->domain; struct irq_domain_chip_generic *dgc = domain->gc; - struct irq_chip_generic *gc = dgc->gc[0]; + struct irq_chip_generic *bgc = dgc->gc[0]; + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); /* Enable interrupt on AIC5 */ - irq_gc_lock(gc); + irq_gc_lock(bgc); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR); irq_reg_writel(gc, 1, AT91_AIC5_IECR); gc->mask_cache |= d->mask; - irq_gc_unlock(gc); + irq_gc_unlock(bgc); } static int aic5_retrigger(struct irq_data *d) -- 2.5.0
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