From: Eduardo Valentin <eduardo.valentin@ti.com>
To: Simon Horman <horms+renesas@verge.net.au>
Cc: Zhang Rui <rui.zhang@intel.com>,
linux-pm@vger.kernel.org, linux-sh@vger.kernel.org,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
Magnus Damm <magnus.damm@gmail.com>,
Ulrich Hecht <ulrich.hecht@gmail.com>,
eduardo.valentin@ti.com
Subject: Re: [PATCH] thermal: rcar: set up I/O base before requesting IRQ
Date: Tue, 4 Jun 2013 08:53:23 -0400 [thread overview]
Message-ID: <51ADE343.1000505@ti.com> (raw)
In-Reply-To: <1370311753-6463-1-git-send-email-horms+renesas@verge.net.au>
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Simon, Ulrich,
On 03-06-2013 22:09, Simon Horman wrote:
> From: Ulrich Hecht <ulrich.hecht@gmail.com>
>
> It is used by the interrupt handler. Fixes crash when booting via kexec
> on APE6 board.
>
> This problem was introduced by e0a5172e9eec7f0d3c476e013c51dab62f3fc666
> ("thermal: rcar: add interrupt support") which was introduced in v3.8-rc3.
>
> Signed-off-by: Ulrich Hecht <ulrich.hecht@gmail.com>
> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> [horms+renesas@verge.net.au: enhanced changelog to include commit
> that cuases the problem ]
> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
> ---
> drivers/thermal/rcar_thermal.c | 14 +++++++-------
> 1 file changed, 7 insertions(+), 7 deletions(-)
>
> Hi Zhang,
>
> could you consider this fix for v3.10?
>
> diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
> index 8d7edd4..7641dcc 100644
> --- a/drivers/thermal/rcar_thermal.c
> +++ b/drivers/thermal/rcar_thermal.c
> @@ -395,13 +395,6 @@ static int rcar_thermal_probe(struct platform_device *pdev)
> return -ENODEV;
> }
>
> - ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, 0,
> - dev_name(dev), common);
> - if (ret) {
> - dev_err(dev, "irq request failed\n ");
> - return ret;
> - }
> -
Should this IRQ be disabled while this driver gets initialized? Reset
state is enabled?
> /*
> * rcar_has_irq_support() will be enabled
> */
> @@ -409,6 +402,13 @@ static int rcar_thermal_probe(struct platform_device *pdev)
> if (IS_ERR(common->base))
> return PTR_ERR(common->base);
>
> + ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, 0,
> + dev_name(dev), common);
> + if (ret) {
> + dev_err(dev, "irq request failed\n ");
> + return ret;
> + }
> +
> /* enable temperature comparation */
> rcar_thermal_common_write(common, ENR, 0x00030303);
>
>
--
You have got to be excited about what you are doing. (L. Lamport)
Eduardo Valentin
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next prev parent reply other threads:[~2013-06-04 12:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-04 2:09 [PATCH] thermal: rcar: set up I/O base before requesting IRQ Simon Horman
2013-06-04 12:53 ` Eduardo Valentin [this message]
2013-06-13 2:56 ` Zhang Rui
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