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[PATCH 01/19] irqchip: atmel-aic: fix wrong bit operation for IRQ priority

From Milo Kim <milo.kim@ti.com>
Newsgroups linux.kernel
Subject [PATCH 01/19] irqchip: atmel-aic: fix wrong bit operation for IRQ priority
Date 2016-01-04 05:30 +0100
Message-ID <qN4Wn-6EU-29@gated-at.bofh.it> (permalink)
References <qN4Wl-6EU-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Atmel AIC has common structure for SMR (Source Mode Register).

  bit[6:5] Interrupt source type
  bit[2:0] Priority level
  Other bits are unused.

To update new priority value, bit[2:0] should be cleared first and then
new priority level can be written. However, aic_common_set_priority()
helper clears source type bits instead of priority bits.
This patch fixes wrong mask bit operation.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Boris BREZILLON <boris.brezillon@free-electrons.com>
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Milo Kim <milo.kim@ti.com>
---
 drivers/irqchip/irq-atmel-aic-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
index b12a5d5..37199b9 100644
--- a/drivers/irqchip/irq-atmel-aic-common.c
+++ b/drivers/irqchip/irq-atmel-aic-common.c
@@ -86,7 +86,7 @@ int aic_common_set_priority(int priority, unsigned *val)
 	    priority > AT91_AIC_IRQ_MAX_PRIORITY)
 		return -EINVAL;
 
-	*val &= AT91_AIC_PRIOR;
+	*val &= ~AT91_AIC_PRIOR;
 	*val |= priority;
 
 	return 0;
-- 
2.6.4

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Thread

[PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 07/19] irqchip: atmel-aic: make common IRQ domain translate function Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 09/19] irqchip: atmel-aic: add common retrigger function Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 13/19] irqchip: atmel-aic: clean up irq_chip_generic Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 01/19] irqchip: atmel-aic: fix wrong bit operation for IRQ priority Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
    Re: [PATCH 01/19] irqchip: atmel-aic: fix wrong bit operation for  IRQ priority Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 09:20 +0100
  [PATCH 17/19] irqchip: atmel-aic: use unified IRQ chip initialization function Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 06/19] irqchip: atmel-aic: introduce register data structure Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
    Re: [PATCH 06/19] irqchip: atmel-aic: introduce register data  structure Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 10:00 +0100
      Re: [PATCH 06/19] irqchip: atmel-aic: introduce register data  structure Milo Kim <milo.kim@ti.com> - 2016-01-06 09:40 +0100
  [PATCH 04/19] irqchip: atmel-aic: replace magic numbers with named constant Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
    Re: [PATCH 04/19] irqchip: atmel-aic: replace magic numbers with  named constant Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 09:30 +0100
  [PATCH 19/19] irqchip: atmel-aic: rename AIC driver and fix Kconfig Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 11/19] irqchip: atmel-aic: add common PM IRQ chip operation Milo Kim <milo.kim@ti.com> - 2016-01-04 05:30 +0100
  [PATCH 12/19] irqchip: atmel-aic: use EOI register data in aic_reg_data Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
  [PATCH 14/19] irqchip: atmel-aic: add common HW init function Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
  [PATCH 10/19] irqchip: atmel-aic: add common set_type function Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
  [PATCH 08/19] irqchip: atmel-aic: add common mask and unmask functions Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
    Re: [PATCH 08/19] irqchip: atmel-aic: add common mask and unmask  functions Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 09:50 +0100
  [PATCH 02/19] irqchip: atmel-aic: clean up RTC interrupt code Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
    Re: [PATCH 02/19] irqchip: atmel-aic: clean up RTC interrupt code Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 09:20 +0100
  [PATCH 05/19] irqchip: atmel-aic: use simple constant to get number of interrupts per chip Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
    Re: [PATCH 05/19] irqchip: atmel-aic: use simple constant to get  number of interrupts per chip Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 09:40 +0100
  [PATCH 03/19] irqchip: atmel-aic: clean up RTT interrupt code Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
    Re: [PATCH 03/19] irqchip: atmel-aic: clean up RTT interrupt code Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 09:20 +0100
  [PATCH 15/19] irqchip: atmel-aic: add common interrupt handler Milo Kim <milo.kim@ti.com> - 2016-01-04 05:40 +0100
  Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-04 10:10 +0100
    Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Nicolas Ferre <nicolas.ferre@atmel.com> - 2016-01-04 10:40 +0100
      Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Milo Kim <milo.kim@ti.com> - 2016-01-06 09:00 +0100
    Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Milo Kim <milo.kim@ti.com> - 2016-01-06 08:50 +0100
      Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-01-06 10:10 +0100
        Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Jason Cooper <jason@lakedaemon.net> - 2016-01-06 15:50 +0100
        Re: [PATCH 00/19] irqchip: atmel-aic: make unified AIC driver Milo Kim <milo.kim@ti.com> - 2016-01-07 08:50 +0100

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