From: Marek Szyprowski <m.szyprowski@samsung.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
Kukjin Kim <kgene@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH 1/2] drivers: amba: properly handle devices with power domains
Date: Thu, 26 Nov 2015 09:39:03 +0100 [thread overview]
Message-ID: <5656C527.8040804@samsung.com> (raw)
In-Reply-To: <20151125180953.GN8644@n2100.arm.linux.org.uk>
Hello,
On 2015-11-25 19:09, Russell King - ARM Linux wrote:
> On Wed, Nov 25, 2015 at 02:56:10PM +0100, Ulf Hansson wrote:
>> On 25 November 2015 at 14:34, Marek Szyprowski <m.szyprowski@samsung.com> wrote:
>>> Is ignoring dev_pm_domain_attach() return value a solution for you?
>> That's probably better than nothing, but I wonder if it in practice
>> will have any effect?
> If the PM domain is down, then trying to tread the ID is likely to oops
> the kernel.
In my case kernel simply hangs (no single message, even when earlyprintk
is enabled)
instead of oopsing, that's why I've submitted this patch.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
WARNING: multiple messages have this Message-ID (diff)
From: m.szyprowski@samsung.com (Marek Szyprowski)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] drivers: amba: properly handle devices with power domains
Date: Thu, 26 Nov 2015 09:39:03 +0100 [thread overview]
Message-ID: <5656C527.8040804@samsung.com> (raw)
In-Reply-To: <20151125180953.GN8644@n2100.arm.linux.org.uk>
Hello,
On 2015-11-25 19:09, Russell King - ARM Linux wrote:
> On Wed, Nov 25, 2015 at 02:56:10PM +0100, Ulf Hansson wrote:
>> On 25 November 2015 at 14:34, Marek Szyprowski <m.szyprowski@samsung.com> wrote:
>>> Is ignoring dev_pm_domain_attach() return value a solution for you?
>> That's probably better than nothing, but I wonder if it in practice
>> will have any effect?
> If the PM domain is down, then trying to tread the ID is likely to oops
> the kernel.
In my case kernel simply hangs (no single message, even when earlyprintk
is enabled)
instead of oopsing, that's why I've submitted this patch.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
next prev parent reply other threads:[~2015-11-26 8:39 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-25 12:55 [PATCH 0/2] Exynos4210: fix power domain for MDMA1 device Marek Szyprowski
2015-11-25 12:55 ` Marek Szyprowski
2015-11-25 12:55 ` [PATCH] ARM: dts: exynos4210: Add power domain to G2D device Marek Szyprowski
2015-11-25 12:55 ` Marek Szyprowski
2015-11-25 23:55 ` Krzysztof Kozlowski
2015-11-25 23:55 ` Krzysztof Kozlowski
2015-11-26 7:35 ` Krzysztof Kozlowski
2015-11-26 7:35 ` Krzysztof Kozlowski
2015-11-25 12:55 ` [PATCH 2/2] ARM: dts: exynos4210: MDMA1 device belongs to LCD0 power domain Marek Szyprowski
2015-11-25 12:55 ` Marek Szyprowski
2015-11-25 12:58 ` [PATCH 1/2] drivers: amba: properly handle devices with power domains Marek Szyprowski
2015-11-25 12:58 ` Marek Szyprowski
2015-11-25 13:24 ` Russell King - ARM Linux
2015-11-25 13:24 ` Russell King - ARM Linux
2015-11-25 13:34 ` Marek Szyprowski
2015-11-25 13:34 ` Marek Szyprowski
2015-11-25 13:56 ` Ulf Hansson
2015-11-25 13:56 ` Ulf Hansson
2015-11-25 14:43 ` Marek Szyprowski
2015-11-25 14:43 ` Marek Szyprowski
2015-11-25 18:09 ` Russell King - ARM Linux
2015-11-25 18:09 ` Russell King - ARM Linux
2015-11-26 8:39 ` Marek Szyprowski [this message]
2015-11-26 8:39 ` Marek Szyprowski
2015-11-26 10:24 ` Ulf Hansson
2015-11-26 10:24 ` Ulf Hansson
2015-11-26 10:59 ` Russell King - ARM Linux
2015-11-26 10:59 ` Russell King - ARM Linux
2015-11-26 12:33 ` Marek Szyprowski
2015-11-26 12:33 ` Marek Szyprowski
2015-11-26 12:55 ` Marek Szyprowski
2015-11-26 12:55 ` Marek Szyprowski
2015-11-26 15:04 ` Mathieu Poirier
2015-11-26 15:04 ` Mathieu Poirier
2015-11-27 7:42 ` Marek Szyprowski
2015-11-27 7:42 ` Marek Szyprowski
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