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bh=kb+x/QfQL3MhHmQt7WtgTjEDw3oPpOHTLxeQqt85Sps=; b=tK17c0EL3IeM1lvIz1UszZjpKmpvsUPjjyK9FiofCTajgLb2gxhm6O+IWqUKqvsuFn 7BtO1I0FZI0ZfHqkrreRjvXFaVpNqjglfAYCj4SIZVYJHjVVM4LDBqfpQJ+XOX6vWc9s ATA1wxdnjZbTzaXTMIE6c2a00m45b/OwPf+nHzsbnT58fhAgKtXky6ydAToPCkC2iItI vm1d1wIvTt2esJD7x8xEd7nFV4Q8dVVFj4rEuQy6q3UOOkvMhxOHnYCfr663RQqfpBJg ZQXxwcN4vBh39QuGCPV8fz7LWLeYShJpCi4SgAPdHxYAFnw4Bdl4s/0eXq8cHgFtMMR9 1q7Q== X-Gm-Message-State: APjAAAX+ra7UbPgokEDjeP402kVEmIX7Io1w870l78uRaeNw8nNIJRWZ paQ7Isw4slOvsPIRdKuTIws= X-Google-Smtp-Source: APXvYqz6wZgg8ErMw/22BWmPi/6AZiUkRYU00MUkLmykKZJoUOrdWhNoxhMCglQZxUTYlB3JBQU/Mw== X-Received: by 2002:a65:6081:: with SMTP id t1mr24882534pgu.9.1563160642510; Sun, 14 Jul 2019 20:17:22 -0700 (PDT) Received: from hfq-skylake.ipads-lab.se.sjtu.edu.cn ([202.120.40.82]) by smtp.googlemail.com with ESMTPSA id r9sm21256921pjq.3.2019.07.14.20.17.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 14 Jul 2019 20:17:22 -0700 (PDT) From: Fuqian Huang To: Subject: [PATCH v3 03/24] dmaengine: imx-sdma: Remove call to memset after dma_alloc_coherent Date: Mon, 15 Jul 2019 11:17:16 +0800 Message-Id: <20190715031716.6328-1-huangfq.daxian@gmail.com> X-Mailer: git-send-email 2.11.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190714_201726_874071_993A34F2 X-CRM114-Status: GOOD ( 10.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sascha Hauer , linux-kernel@vger.kernel.org, Fuqian Huang , Vinod Koul , dmaengine@vger.kernel.org, Shawn Guo , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP In commit 518a2f1925c3 ("dma-mapping: zero memory returned from dma_alloc_*"), dma_alloc_coherent has already zeroed the memory. So memset is not needed. Signed-off-by: Fuqian Huang --- Changes in v3: - Use actual commit rather than the merge commit in the commit message drivers/dma/imx-sdma.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 4ec84a633bd3..decfb9e9648a 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1886,10 +1886,6 @@ static int sdma_init(struct sdma_engine *sdma) sdma->context_phys = ccb_phys + MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control); - /* Zero-out the CCB structures array just allocated */ - memset(sdma->channel_control, 0, - MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control)); - /* disable all channels */ for (i = 0; i < sdma->drvdata->num_events; i++) writel_relaxed(0, sdma->regs + chnenbl_ofs(sdma, i));