From: plagnioj@jcrosoft•com (Jean-Christophe PLAGNIOL-VILLARD)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 3/4] ARM: at91: fix infinite loop in at91_irq_suspend/resume
Date: Fri, 8 Mar 2013 16:58:28 +0100 [thread overview]
Message-ID: <20130308155828.GC4590@game.jcrosoft.org> (raw)
In-Reply-To: <1362755638-20092-4-git-send-email-ludovic.desroches@atmel.com>
On 16:13 Fri 08 Mar , ludovic.desroches at atmel.com wrote:
> From: Ludovic Desroches <ludovic.desroches@atmel•com>
>
> Fix an infinite loop when suspending or resuming a device with AIC5 i.e. SAMA5
> devices.
>
> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel•com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft•com>
Best Regards,
J.
> ---
> arch/arm/mach-at91/irq.c | 20 ++++++++------------
> 1 file changed, 8 insertions(+), 12 deletions(-)
>
> diff --git a/arch/arm/mach-at91/irq.c b/arch/arm/mach-at91/irq.c
> index 8e21026..e0ca591 100644
> --- a/arch/arm/mach-at91/irq.c
> +++ b/arch/arm/mach-at91/irq.c
> @@ -92,23 +92,21 @@ static int at91_aic_set_wake(struct irq_data *d, unsigned value)
>
> void at91_irq_suspend(void)
> {
> - int i = 0, bit;
> + int bit = -1;
>
> if (has_aic5()) {
> /* disable enabled irqs */
> - while ((bit = find_next_bit(backups, n_irqs, i)) < n_irqs) {
> + while ((bit = find_next_bit(backups, n_irqs, bit + 1)) < n_irqs) {
> at91_aic_write(AT91_AIC5_SSR,
> bit & AT91_AIC5_INTSEL_MSK);
> at91_aic_write(AT91_AIC5_IDCR, 1);
> - i = bit;
> }
> /* enable wakeup irqs */
> - i = 0;
> - while ((bit = find_next_bit(wakeups, n_irqs, i)) < n_irqs) {
> + bit = -1;
> + while ((bit = find_next_bit(wakeups, n_irqs, bit + 1)) < n_irqs) {
> at91_aic_write(AT91_AIC5_SSR,
> bit & AT91_AIC5_INTSEL_MSK);
> at91_aic_write(AT91_AIC5_IECR, 1);
> - i = bit;
> }
> } else {
> at91_aic_write(AT91_AIC_IDCR, *backups);
> @@ -118,23 +116,21 @@ void at91_irq_suspend(void)
>
> void at91_irq_resume(void)
> {
> - int i = 0, bit;
> + int bit = -1;
>
> if (has_aic5()) {
> /* disable wakeup irqs */
> - while ((bit = find_next_bit(wakeups, n_irqs, i)) < n_irqs) {
> + while ((bit = find_next_bit(wakeups, n_irqs, bit + 1)) < n_irqs) {
> at91_aic_write(AT91_AIC5_SSR,
> bit & AT91_AIC5_INTSEL_MSK);
> at91_aic_write(AT91_AIC5_IDCR, 1);
> - i = bit;
> }
> /* enable irqs disabled for suspend */
> - i = 0;
> - while ((bit = find_next_bit(backups, n_irqs, i)) < n_irqs) {
> + bit = -1;
> + while ((bit = find_next_bit(backups, n_irqs, bit + 1)) < n_irqs) {
> at91_aic_write(AT91_AIC5_SSR,
> bit & AT91_AIC5_INTSEL_MSK);
> at91_aic_write(AT91_AIC5_IECR, 1);
> - i = bit;
> }
> } else {
> at91_aic_write(AT91_AIC_IDCR, *wakeups);
> --
> 1.7.11.3
>
next prev parent reply other threads:[~2013-03-08 15:58 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-08 15:13 [PATCH 0/4] SAMA5D3 support ludovic.desroches at atmel.com
2013-03-08 15:13 ` [PATCH 1/4] ARM: at91: add AT91_SAM9_TIME entry to select at91sam926x_time.c compilation ludovic.desroches at atmel.com
2013-03-08 15:13 ` [PATCH 2/4] ARM: at91: introduce the core type choice to split ARMv4/5 and ARMv7 arch ludovic.desroches at atmel.com
2013-03-08 15:58 ` Jean-Christophe PLAGNIOL-VILLARD
2013-03-08 15:13 ` [PATCH 3/4] ARM: at91: fix infinite loop in at91_irq_suspend/resume ludovic.desroches at atmel.com
2013-03-08 15:58 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-03-13 9:21 ` Nicolas Ferre
2013-03-08 15:13 ` [PATCH 4/4] ARM: at91: introduce SAMA5 support ludovic.desroches at atmel.com
2013-03-08 16:40 ` Joachim Eastwood
2013-03-08 16:52 ` Ludovic Desroches
[not found] ` <513a1756.e94aec0a.1f22.6694SMTPIN_ADDED_BROKEN@mx.google.com>
2013-03-08 17:18 ` Joachim Eastwood
2013-03-08 18:56 ` Jean-Christophe PLAGNIOL-VILLARD
2013-03-08 21:27 ` Joachim Eastwood
2013-03-11 12:35 ` Jean-Christophe PLAGNIOL-VILLARD
2013-03-13 14:35 ` Nicolas Ferre
2013-03-08 18:00 ` [PATCH 0/4] SAMA5D3 support Robert Nelson
2013-03-11 11:15 ` Ludovic Desroches
[not found] ` <513dbd6d.c99d2a0a.2f58.ffff9ac2SMTPIN_ADDED_BROKEN@mx.google.com>
2013-03-11 15:01 ` Robert Nelson
2013-03-11 11:19 ` [PATCH] ARM: at91: change name template in AT91_SOC_START macro ludovic.desroches at atmel.com
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