From: Sinan Kaya <okaya@codeaurora.org>
To: Vinod Koul <vinod.koul@intel.com>
Cc: dmaengine@vger.kernel.org, timur@codeaurora.org,
devicetree@vger.kernel.org, cov@codeaurora.org, jcm@redhat.com,
agross@codeaurora.org, arnd@arndb.de,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Dan Williams <dan.j.williams@intel.com>,
Wei Yongjun <yongjun_wei@trendmicro.com.cn>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V4 04/10] dmaengine: qcom_hidma: configure DMA and MSI for OF
Date: Sat, 1 Oct 2016 11:15:00 -0400 [thread overview]
Message-ID: <da6536a3-353e-1364-7074-9d3dcbcc4171@codeaurora.org> (raw)
In-Reply-To: <20161001061710.GF2467@localhost>
On 10/1/2016 2:17 AM, Vinod Koul wrote:
> On Wed, Sep 28, 2016 at 10:12:41PM -0400, Sinan Kaya wrote:
>> Configure the DMA bindings for the device tree based firmware.
>>
>> Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
>> ---
>> drivers/dma/qcom/hidma_mgmt.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/dma/qcom/hidma_mgmt.c b/drivers/dma/qcom/hidma_mgmt.c
>> index 82f36e4..e8f6b84 100644
>> --- a/drivers/dma/qcom/hidma_mgmt.c
>> +++ b/drivers/dma/qcom/hidma_mgmt.c
>> @@ -375,8 +375,11 @@ static int __init hidma_mgmt_of_populate_channels(struct device_node *np)
>> ret = PTR_ERR(new_pdev);
>> goto out;
>> }
>> + of_node_get(child);
>> + new_pdev->dev.of_node = child;
>> of_dma_configure(&new_pdev->dev, child);
>> -
>> + of_msi_configure(&new_pdev->dev, child);
>> + of_node_put(child);
>
> should this be done unconditionally? Dont we needto call this only for
> platforms with msi?
I followed the pattern in of_platform_device_create_pdata function. of_msi_configure does
nothing if MSI is not enabled as irq_find_matching_host returns NULL. It didn't have any
side effects on my testing either.
>
>> kfree(res);
>> res = NULL;
>> }
>> --
>> 1.9.1
>>
>
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2016-10-01 15:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-29 2:12 [PATCH V4 00/10] dmaengine: qcom_hidma: add MSI interrupt support Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 02/10] Documentation: DT: qcom_hidma: correct spelling mistakes Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 06/10] dmaengine: qcom_hidma: make error and success path common Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 07/10] dmaengine: qcom_hidma: bring out interrupt cause Sinan Kaya
[not found] ` <1475115167-5898-1-git-send-email-okaya-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2016-09-29 2:12 ` [PATCH V4 01/10] Documentation: DT: qcom_hidma: update binding for MSI Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 03/10] of: irq: make of_msi_configure accessible from modules Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 04/10] dmaengine: qcom_hidma: configure DMA and MSI for OF Sinan Kaya
2016-10-01 6:17 ` Vinod Koul
2016-10-01 15:15 ` Sinan Kaya [this message]
2016-10-03 3:38 ` Vinod Koul
2016-10-03 13:39 ` Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 05/10] dmaengine: qcom_hidma: make pending_tre_count atomic Sinan Kaya
2016-10-01 6:19 ` Vinod Koul
2016-10-01 15:19 ` Sinan Kaya
2016-10-03 3:39 ` Vinod Koul
2016-09-29 2:12 ` [PATCH V4 08/10] dmaengine: qcom_hidma: add a common API to setup the interrupt Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 09/10] dmaengine: qcom_hidma: protect common data structures Sinan Kaya
2016-09-29 2:12 ` [PATCH V4 10/10] dmaengine: qcom_hidma: add MSI support for interrupts Sinan Kaya
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