On 11/8/2015 3:47 PM, Andy Shevchenko wrote:
On Sun, Nov 8, 2015 at 6:53 AM, Sinan Kaya <okaya@xxxxxxxxxxxxxx> wrote:
This patch adds support for hidma engine. The driver
consists of two logical blocks. The DMA engine interface
and the low-level interface. The hardware only supports
memcpy/memset and this driver only support memcpy
interface. HW and driver doesn't support slave interface.
Make lines a bit longer.
OK
+ pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_TIMEOUT);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ trca_resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!trca_resource) {
+ rc = -ENODEV;
+ goto bailout;
+ }
Why did you ignore my comment about this block?
Remove that condition entirely.
Removed these four lines above.
+
+ trca = devm_ioremap_resource(&pdev->dev, trca_resource);
+ if (IS_ERR(trca)) {
+ rc = -ENOMEM;
+ goto bailout;
+ }
+
+ evca_resource = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!evca_resource) {
+ rc = -ENODEV;
+ goto bailout;
+ }
Ditto.
done
+uninit:
+ hidma_debug_uninit(dmadev);
+ hidma_ll_uninit(dmadev->lldev);
+dmafree:
+ if (dmadev)
+ hidma_free(dmadev);
+bailout:
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_sync_suspend(&pdev->dev);
Are you sure this is appropriate sequence?
I think
pm_runtime_put();
pm_runtime_disable();
corrected, reordered and used pm_runtime_put_sync() instead.
will do the job.
+ return rc;
+}
+
+static int hidma_remove(struct platform_device *pdev)
+{
+ struct hidma_dev *dmadev = platform_get_drvdata(pdev);
+
+ dev_dbg(&pdev->dev, "removing\n");
Useless message.
Removed.
+ pm_runtime_get_sync(dmadev->ddev.dev);
+
+ dma_async_device_unregister(&dmadev->ddev);
+ hidma_debug_uninit(dmadev);
+ hidma_ll_uninit(dmadev->lldev);
+ hidma_free(dmadev);
+
+ dev_info(&pdev->dev, "HI-DMA engine removed\n");
+ pm_runtime_put_sync_suspend(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
--
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a
Linux Foundation Collaborative Project
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