83 lines
2.7 KiB
Diff
83 lines
2.7 KiB
Diff
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author Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> 2015-05-15 02:00:07 +0300
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committer John Stultz <john.stultz@linaro.org> 2017-05-12 12:39:37 -0700
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commit 4d4d7186492648fe2517178b983fcd5a55e3d575 (patch)
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tree fea85da4e2e33bac4712d8c0ab66a0d0624920f8
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parent b3c0228dd8468ab9a9da3b70b2a011ffb855091b (diff)
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download flo-4d4d7186492648fe2517178b983fcd5a55e3d575.tar.gz
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drivers: platform: Configure dma operations at probe time
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Configuring DMA ops at probe time will allow deferring device probe when
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the IOMMU isn't available yet.
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Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Diffstat
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-rw-r--r-- drivers/base/platform.c 9
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-rw-r--r-- drivers/of/platform.c 7
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2 files changed, 12 insertions, 4 deletions
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diff --git a/drivers/base/platform.c b/drivers/base/platform.c
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index c245683..1526298 100644
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--- a/drivers/base/platform.c
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+++ b/drivers/base/platform.c
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@@ -572,6 +572,10 @@ static int platform_drv_probe(struct device *_dev)
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if (ret < 0)
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return ret;
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+ ret = of_dma_configure_ops(_dev, _dev->of_node);
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+ if (ret < 0)
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+ goto done;
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+
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ret = dev_pm_domain_attach(_dev, true);
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if (ret != -EPROBE_DEFER) {
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if (drv->probe) {
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@@ -584,6 +588,10 @@ static int platform_drv_probe(struct device *_dev)
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}
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}
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+ if (ret)
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+ of_dma_deconfigure(_dev);
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+
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+done:
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if (drv->prevent_deferred_probe && ret == -EPROBE_DEFER) {
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dev_warn(_dev, "probe deferral not supported\n");
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ret = -ENXIO;
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@@ -606,6 +614,7 @@ static int platform_drv_remove(struct device *_dev)
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if (drv->remove)
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ret = drv->remove(dev);
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dev_pm_domain_detach(_dev, true);
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+ of_dma_deconfigure(_dev);
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return ret;
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}
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diff --git a/drivers/of/platform.c b/drivers/of/platform.c
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index a2d27bc..967f6ce 100644
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--- a/drivers/of/platform.c
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+++ b/drivers/of/platform.c
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@@ -187,11 +187,9 @@ static struct platform_device *of_platform_device_create_pdata(
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dev->dev.bus = &platform_bus_type;
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dev->dev.platform_data = platform_data;
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of_dma_configure_masks(&dev->dev, dev->dev.of_node);
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- of_dma_configure_ops(&dev->dev, dev->dev.of_node);
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of_msi_configure(&dev->dev, dev->dev.of_node);
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if (of_device_add(dev) != 0) {
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- of_dma_deconfigure(&dev->dev);
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platform_device_put(dev);
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goto err_clear_flag;
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}
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@@ -540,11 +538,12 @@ static int of_platform_device_destroy(struct device *dev, void *data)
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if (dev->bus == &platform_bus_type)
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platform_device_unregister(to_platform_device(dev));
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#ifdef CONFIG_ARM_AMBA
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- else if (dev->bus == &amba_bustype)
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+ else if (dev->bus == &amba_bustype) {
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amba_device_unregister(to_amba_device(dev));
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+ of_dma_deconfigure(dev);
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+ }
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#endif
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- of_dma_deconfigure(dev);
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of_node_clear_flag(dev->of_node, OF_POPULATED);
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of_node_clear_flag(dev->of_node, OF_POPULATED_BUS);
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return 0;
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