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usb: cdns3: imx: fix can't create core device the second time issue

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commit 2ef02b846e upstream.

The cdns3 core device is populated by calling of_platform_populate,
the flag OF_POPULATED is set for core device node, if this flag
is not cleared, when calling of_platform_populate the second time
after loading parent module again, the OF code will not try to create
platform device for core device.

To fix it, it uses of_platform_depopulate to depopulate the core
device which the parent created, and the flag OF_POPULATED for
core device node will be cleared accordingly.

Cc: <stable@vger.kernel.org>
Fixes: 1e056efab9 ("usb: cdns3: add NXP imx8qm glue layer")
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Chen
2020-12-10 21:31:37 +08:00
committed by Greg Kroah-Hartman
parent cc7f1a3242
commit 6b81e926bb
1 changed files with 1 additions and 10 deletions
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11
drivers/usb/cdns3/cdns3-imx.c
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@@ -218,20 +218,11 @@ err:
return ret;
}
static int cdns_imx_remove_core(struct device *dev, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
platform_device_unregister(pdev);
return 0;
}
static int cdns_imx_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
device_for_each_child(dev, NULL, cdns_imx_remove_core);
of_platform_depopulate(dev);
platform_set_drvdata(pdev, NULL);
return 0;