From: Laxman Dewangan <ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
To: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Cc: "Richard Zhao"
<richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
"Vinod Koul" <vinod.koul-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
"alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org"
<alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org>,
"ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org"
<ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>,
"broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org"
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>,
"w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org"
<w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
"linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org"
<kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
"dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org"
<dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"lrg-l0cyMroinI0@public.gmane.org"
<lrg-l0cyMroinI0@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"Lothar Waßmann"
<LW-bxm8fMRDkQLDiMYJYoSAnRvVK+yQ3ZXh@public.gmane.org>
Subject: Re: [PATCH 01/11] dma: imx-sdma: make channel0 operations atomic
Date: Fri, 27 Apr 2012 18:47:10 +0530 [thread overview]
Message-ID: <4F9A9C56.6090301@nvidia.com> (raw)
In-Reply-To: <20120427131010.GN24211-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
On Friday 27 April 2012 06:40 PM, Russell King - ARM Linux wrote:
> On Fri, Apr 27, 2012 at 06:31:13PM +0530, Laxman Dewangan wrote:
>> On Friday 27 April 2012 05:03 PM, Russell King - ARM Linux wrote:
>>> On Fri, Apr 27, 2012 at 07:26:56PM +0800, Richard Zhao wrote:
>>>> Sure, I mean, can you doc in include/linux/dmaengine.h that
>>>> dmaengine_prep_xxx may sleep?
>>> Incorrect. They may _not_ sleep.
>> But I have seen that we are using the kzalloc in the dmaengine_prep_xxx
>> and kzalloc is sleeping call.
> Not with GFP_ATOMIC it isn't.
Yes, with GFP_ATOMIC , it will not be a sleeping calls.
I will fix my dma driver accordingly.
WARNING: multiple messages have this Message-ID (diff)
From: ldewangan@nvidia.com (Laxman Dewangan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 01/11] dma: imx-sdma: make channel0 operations atomic
Date: Fri, 27 Apr 2012 18:47:10 +0530 [thread overview]
Message-ID: <4F9A9C56.6090301@nvidia.com> (raw)
In-Reply-To: <20120427131010.GN24211@n2100.arm.linux.org.uk>
On Friday 27 April 2012 06:40 PM, Russell King - ARM Linux wrote:
> On Fri, Apr 27, 2012 at 06:31:13PM +0530, Laxman Dewangan wrote:
>> On Friday 27 April 2012 05:03 PM, Russell King - ARM Linux wrote:
>>> On Fri, Apr 27, 2012 at 07:26:56PM +0800, Richard Zhao wrote:
>>>> Sure, I mean, can you doc in include/linux/dmaengine.h that
>>>> dmaengine_prep_xxx may sleep?
>>> Incorrect. They may _not_ sleep.
>> But I have seen that we are using the kzalloc in the dmaengine_prep_xxx
>> and kzalloc is sleeping call.
> Not with GFP_ATOMIC it isn't.
Yes, with GFP_ATOMIC , it will not be a sleeping calls.
I will fix my dma driver accordingly.
next prev parent reply other threads:[~2012-04-27 13:17 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-27 7:02 [PATCH 00/11] enable imx6q_sabrelite sgtl5000 audio support Richard Zhao
2012-04-27 7:02 ` Richard Zhao
[not found] ` <1335510185-7906-1-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-04-27 7:02 ` [PATCH 01/11] dma: imx-sdma: make channel0 operations atomic Richard Zhao
2012-04-27 7:02 ` Richard Zhao
[not found] ` <1335510185-7906-2-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-04-27 7:55 ` Sascha Hauer
2012-04-27 7:55 ` Sascha Hauer
[not found] ` <20120427075544.GV17184-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2012-04-27 9:17 ` Richard Zhao
2012-04-27 9:17 ` Richard Zhao
2012-04-27 8:21 ` Vinod Koul
2012-04-27 8:21 ` Vinod Koul
2012-04-27 8:41 ` Richard Zhao
2012-04-27 8:41 ` Richard Zhao
[not found] ` <20120427084109.GO28063-iWYTGMXpHj9ITqJhDdzsOjpauB2SiJktrE5yTffgRl4@public.gmane.org>
2012-04-27 10:22 ` Vinod Koul
2012-04-27 10:22 ` Vinod Koul
2012-04-27 11:20 ` Mark Brown
2012-04-27 11:20 ` Mark Brown
2012-04-27 11:26 ` Richard Zhao
2012-04-27 11:26 ` Richard Zhao
2012-04-27 11:33 ` Russell King - ARM Linux
2012-04-27 11:33 ` Russell King - ARM Linux
[not found] ` <20120427113335.GM24211-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2012-04-27 13:01 ` Laxman Dewangan
2012-04-27 13:01 ` Laxman Dewangan
2012-04-27 13:10 ` Russell King - ARM Linux
2012-04-27 13:10 ` Russell King - ARM Linux
[not found] ` <20120427131010.GN24211-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2012-04-27 13:17 ` Laxman Dewangan [this message]
2012-04-27 13:17 ` Laxman Dewangan
2012-04-27 13:19 ` Richard Zhao
2012-04-27 13:19 ` Richard Zhao
2012-04-27 9:18 ` Lothar Waßmann
2012-04-27 9:18 ` Lothar Waßmann
[not found] ` <20378.25703.527491.719116-VjFSrY7JcPWvSplVBqRQBQ@public.gmane.org>
2012-04-27 13:25 ` Richard Zhao
2012-04-27 13:25 ` Richard Zhao
[not found] ` <20120427132538.GU28063-iWYTGMXpHj9ITqJhDdzsOjpauB2SiJktrE5yTffgRl4@public.gmane.org>
2012-04-27 15:13 ` Lothar Waßmann
2012-04-27 15:13 ` Lothar Waßmann
[not found] ` <20378.47000.131486.237752-VjFSrY7JcPWvSplVBqRQBQ@public.gmane.org>
2012-04-27 15:27 ` Huang Shijie
2012-04-27 15:27 ` Huang Shijie
2012-04-27 7:02 ` [PATCH 02/11] ASoC: imx-sgtl5000: add of_node_put when probe fail Richard Zhao
2012-04-27 7:02 ` Richard Zhao
[not found] ` <1335510185-7906-3-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-04-27 17:44 ` Mark Brown
2012-04-27 17:44 ` Mark Brown
2012-04-27 7:02 ` [PATCH 03/11] ASoC: fsl: add sgtl5000 clock support for imx-sgtl5000 Richard Zhao
2012-04-27 7:02 ` Richard Zhao
2012-04-27 17:44 ` Mark Brown
2012-04-27 17:44 ` Mark Brown
[not found] ` <1335510185-7906-4-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-05-01 13:44 ` Shawn Guo
2012-05-01 13:44 ` Shawn Guo
[not found] ` <20120501134446.GK2194-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-05-02 10:50 ` Richard Zhao
2012-05-02 10:50 ` Richard Zhao
2012-05-02 11:41 ` Mark Brown
2012-05-02 11:41 ` Mark Brown
[not found] ` <20120502114121.GB5722-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2012-05-02 12:12 ` Shawn Guo
2012-05-02 12:12 ` Shawn Guo
2012-05-02 12:22 ` Mark Brown
2012-05-02 12:22 ` Mark Brown
2012-04-27 7:02 ` [PATCH 04/11] i2c: imx: add pinctrl support Richard Zhao
2012-04-27 7:02 ` Richard Zhao
[not found] ` <1335510185-7906-5-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-04-27 8:40 ` Dong Aisheng
2012-04-27 8:40 ` Dong Aisheng
[not found] ` <20120427084056.GD826-Fb7DQEYuewWctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-04-27 9:15 ` Richard Zhao
2012-04-27 9:15 ` Richard Zhao
2012-04-27 7:02 ` [PATCH 05/11] ARM: imx6q: move imx6q_sabrelite specific code to a dedicated function Richard Zhao
2012-04-27 7:02 ` Richard Zhao
[not found] ` <1335510185-7906-6-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-05-01 13:18 ` Shawn Guo
2012-05-01 13:18 ` Shawn Guo
2012-04-27 7:03 ` [PATCH 06/11] ARM: dts: imx6q-sabrelite: add ssi device Richard Zhao
2012-04-27 7:03 ` Richard Zhao
[not found] ` <1335510185-7906-7-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-05-01 13:26 ` Shawn Guo
2012-05-01 13:26 ` Shawn Guo
[not found] ` <20120501132651.GJ2194-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-05-02 2:38 ` Shawn Guo
2012-05-02 2:38 ` Shawn Guo
2012-04-27 7:03 ` [PATCH 07/11] ARM: dts: imx6q-sabrelite: add audmux device Richard Zhao
2012-04-27 7:03 ` Richard Zhao
2012-04-27 7:03 ` [PATCH 08/11] ASoC: imx-audmux: add pinctrl support Richard Zhao
2012-04-27 7:03 ` Richard Zhao
2012-04-27 7:03 ` [PATCH 09/11] ARM: imx6q: add ssi1 clk_lookup Richard Zhao
2012-04-27 7:03 ` Richard Zhao
[not found] ` <1335510185-7906-10-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-04-27 8:04 ` Sascha Hauer
2012-04-27 8:04 ` Sascha Hauer
[not found] ` <20120427080412.GW17184-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2012-04-27 9:10 ` Richard Zhao
2012-04-27 9:10 ` Richard Zhao
[not found] ` <20120427091055.GP28063-iWYTGMXpHj9ITqJhDdzsOjpauB2SiJktrE5yTffgRl4@public.gmane.org>
2012-04-27 9:25 ` Sascha Hauer
2012-04-27 9:25 ` Sascha Hauer
[not found] ` <20120427092529.GA20478-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2012-04-30 2:01 ` Richard Zhao
2012-04-30 2:01 ` Richard Zhao
2012-04-30 12:18 ` Sascha Hauer
2012-04-30 12:18 ` Sascha Hauer
[not found] ` <20120430121857.GL4141-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2012-05-02 10:34 ` Richard Zhao
2012-05-02 10:34 ` Richard Zhao
[not found] ` <20120502103440.GA2982-iWYTGMXpHj9ITqJhDdzsOjpauB2SiJktrE5yTffgRl4@public.gmane.org>
2012-05-02 14:34 ` Shawn Guo
2012-05-02 14:34 ` Shawn Guo
[not found] ` <20120502143413.GE2194-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-05-02 16:33 ` Sascha Hauer
2012-05-02 16:33 ` Sascha Hauer
2012-04-27 7:03 ` [PATCH 10/11] ARM: imx6q_sabrelite: clkdev_add cko1 for sgtl5000 Richard Zhao
2012-04-27 7:03 ` Richard Zhao
2012-05-01 12:47 ` Shawn Guo
2012-05-01 12:47 ` Shawn Guo
2012-05-01 23:39 ` Shawn Guo
2012-05-01 23:39 ` Shawn Guo
[not found] ` <20120501233939.GO2194-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-05-02 2:47 ` [alsa-devel] " Fabio Estevam
2012-05-02 2:47 ` Fabio Estevam
[not found] ` <CAOMZO5Ab5pYuOY4oLbkOc+SeeT6itKOMJu+zzodFOJaW5h+RuQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-02 3:37 ` Shawn Guo
2012-05-02 3:37 ` Shawn Guo
[not found] ` <20120501124706.GF2194-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-05-02 11:00 ` Richard Zhao
2012-05-02 11:00 ` Richard Zhao
2012-04-27 7:03 ` [PATCH 11/11] ARM: dts: imx6q-sabrelite: add sound device imx6q-sabrelite-sgtl5000 Richard Zhao
2012-04-27 7:03 ` Richard Zhao
[not found] ` <1335510185-7906-12-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-05-01 12:55 ` Shawn Guo
2012-05-01 12:55 ` Shawn Guo
[not found] ` <20120501125512.GG2194-rvtDTF3kK1ictlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2012-05-02 10:37 ` Richard Zhao
2012-05-02 10:37 ` Richard Zhao
-- strict thread matches above, loose matches on Subject: below --
2012-04-27 6:55 [PATCH 00/11] enable imx6q_sabrelite sgtl5000 audio support Richard Zhao
[not found] ` <1335509762-7777-1-git-send-email-richard.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2012-04-27 6:55 ` [PATCH 01/11] dma: imx-sdma: make channel0 operations atomic Richard Zhao
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