Commit d32dc9aa authored by Ludovic Desroches's avatar Ludovic Desroches Committed by Thomas Gleixner

irqchip/atmel-aic5: Use per chip mask caches in mask/unmask()

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.

Fixes: b1479ebb ("irqchip: atmel-aic: Add atmel AIC/AIC5 drivers")
Signed-off-by: default avatarLudovic Desroches <ludovic.desroches@atmel.com>
Cc: <sasha.levin@oracle.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <nicolas.ferre@atmel.com>
Cc: <alexandre.belloni@free-electrons.com>
Cc: <boris.brezillon@free-electrons.com>
Cc: <Wenyou.Yang@atmel.com>
Cc: <jason@lakedaemon.net>
Cc: <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org #3.18
Link: http://lkml.kernel.org/r/1442843173-2390-1-git-send-email-ludovic.desroches@atmel.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 1f93e4a9
...@@ -88,28 +88,36 @@ static void aic5_mask(struct irq_data *d) ...@@ -88,28 +88,36 @@ static void aic5_mask(struct irq_data *d)
{ {
struct irq_domain *domain = d->domain; struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc; 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); * Disable interrupt on AIC5. We always take the lock of the
* first irq chip as all chips share the same registers.
*/
irq_gc_lock(bgc);
irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(gc, 1, AT91_AIC5_IDCR); irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
gc->mask_cache &= ~d->mask; gc->mask_cache &= ~d->mask;
irq_gc_unlock(gc); irq_gc_unlock(bgc);
} }
static void aic5_unmask(struct irq_data *d) static void aic5_unmask(struct irq_data *d)
{ {
struct irq_domain *domain = d->domain; struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc; 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); * Enable interrupt on AIC5. We always take the lock of the
* first irq chip as all chips share the same registers.
*/
irq_gc_lock(bgc);
irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR); irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(gc, 1, AT91_AIC5_IECR); irq_reg_writel(gc, 1, AT91_AIC5_IECR);
gc->mask_cache |= d->mask; gc->mask_cache |= d->mask;
irq_gc_unlock(gc); irq_gc_unlock(bgc);
} }
static int aic5_retrigger(struct irq_data *d) static int aic5_retrigger(struct irq_data *d)
......
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