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[86.26.100.93]) by smtp.gmail.com with ESMTPSA id s9sm15632778wra.4.2018.02.15.04.27.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 15 Feb 2018 04:27:16 -0800 (PST) From: srinivas.kandagatla@linaro.org To: vinod.koul@intel.com, andy.gross@linaro.org, dmaengine@vger.kernel.org Cc: robh+dt@kernel.org, mark.rutland@arm.com, david.brown@linaro.org, dan.j.williams@intel.com, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-soc@vger.kernel.org, yanhe@quicinc.com, ramkri@qti.qualcomm.com, sdharia@quicinc.com, Srinivas Kandagatla Subject: [PATCH v3 1/5] dmaengine: qcom: bam_dma: make bam clk optional Date: Thu, 15 Feb 2018 12:25:07 +0000 Message-Id: <20180215122511.13517-2-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180215122511.13517-1-srinivas.kandagatla@linaro.org> References: <20180215122511.13517-1-srinivas.kandagatla@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Srinivas Kandagatla When BAM is remotely controlled it does not sound correct to control its clk on Linux side. Make it optional, so that its not mandatory for remote controlled BAM instances. Signed-off-by: Srinivas Kandagatla --- drivers/dma/qcom/bam_dma.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) -- 2.15.1 diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index d076940e0c69..b79691fcc82d 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -1233,8 +1233,12 @@ static int bam_dma_probe(struct platform_device *pdev) "qcom,controlled-remotely"); bdev->bamclk = devm_clk_get(bdev->dev, "bam_clk"); - if (IS_ERR(bdev->bamclk)) - return PTR_ERR(bdev->bamclk); + if (IS_ERR(bdev->bamclk)) { + if (!bdev->controlled_remotely) + return PTR_ERR(bdev->bamclk); + + bdev->bamclk = NULL; + } ret = clk_prepare_enable(bdev->bamclk); if (ret) {