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Wed, 24 Apr 2019 11:27:22 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 6E7CD34; Wed, 24 Apr 2019 09:27:21 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node2.st.com [10.75.127.14]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 4CB691578; Wed, 24 Apr 2019 09:27:21 +0000 (GMT) Received: from [10.48.1.93] (10.75.127.47) by SFHDAG5NODE2.st.com (10.75.127.14) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 24 Apr 2019 11:27:20 +0200 Subject: Re: [PATCH] dmaengine: stm32-dma: dmaengine: stm32-dma: use platform_get_irq() To: Fabien Dessenne , Vinod Koul , Dan Williams , Maxime Coquelin , Alexandre Torgue , , , , References: <1556097685-7236-1-git-send-email-fabien.dessenne@st.com> From: Pierre Yves MORDRET Message-ID: <20f014c3-0511-2b43-bcd2-1ca8cc700d54@st.com> Date: Wed, 24 Apr 2019 11:27:20 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <1556097685-7236-1-git-send-email-fabien.dessenne@st.com> Content-Language: en-US X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG2NODE2.st.com (10.75.127.5) To SFHDAG5NODE2.st.com (10.75.127.14) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-04-24_07:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190424_022735_039456_AC8682B6 X-CRM114-Status: GOOD ( 17.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello Reviewed-by: Pierre-Yves MORDRET Thanks On 4/24/19 11:21 AM, Fabien Dessenne wrote: > platform_get_resource(pdev, IORESOURCE_IRQ) is not recommended for > requesting IRQ's resources, as they can be not ready yet. Using > platform_get_irq() instead is preferred for getting IRQ even if it was > not retrieved earlier. > > Signed-off-by: Fabien Dessenne > --- > drivers/dma/stm32-dma.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c > index ba239b5..3306818 100644 > --- a/drivers/dma/stm32-dma.c > +++ b/drivers/dma/stm32-dma.c > @@ -1302,13 +1302,14 @@ static int stm32_dma_probe(struct platform_device *pdev) > > for (i = 0; i < STM32_DMA_MAX_CHANNELS; i++) { > chan = &dmadev->chan[i]; > - res = platform_get_resource(pdev, IORESOURCE_IRQ, i); > - if (!res) { > - ret = -EINVAL; > - dev_err(&pdev->dev, "No irq resource for chan %d\n", i); > + chan->irq = platform_get_irq(pdev, i); > + if (chan->irq < 0) { > + ret = chan->irq; > + if (ret != -EPROBE_DEFER) > + dev_err(&pdev->dev, > + "No irq resource for chan %d\n", i); > goto err_unregister; > } > - chan->irq = res->start; > ret = devm_request_irq(&pdev->dev, chan->irq, > stm32_dma_chan_irq, 0, > dev_name(chan2dev(chan)), chan); > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel