From 666472733b8ce20716037c0d866395db54aa8c1d Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Mon, 21 Sep 2015 11:14:33 +0300 Subject: usb: dwc3: st: prepare the driver for generic usb_get_dr_mode function of_usb_get_dr_mode will be converted into more generic usb_get_dr_mode function that will take struct device instead of struct device_node as its parameter. To make the conversion possible later, waiting for the platform device for dwc3 to be populated before calling of_usb_get_dr_mode. Signed-off-by: Heikki Krogerus CC: Giuseppe Cavallaro CC: Peter Griffin Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-st.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers/usb/dwc3/dwc3-st.c') diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index de4d52f62517..02d47d50905b 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -195,6 +195,7 @@ static int st_dwc3_probe(struct platform_device *pdev) struct resource *res; struct device *dev = &pdev->dev; struct device_node *node = dev->of_node, *child; + struct platform_device *child_pdev; struct regmap *regmap; int ret; @@ -253,8 +254,6 @@ static int st_dwc3_probe(struct platform_device *pdev) goto undo_softreset; } - dwc3_data->dr_mode = of_usb_get_dr_mode(child); - /* Allocate and initialize the core */ ret = of_platform_populate(node, NULL, NULL, dev); if (ret) { @@ -262,6 +261,15 @@ static int st_dwc3_probe(struct platform_device *pdev) goto undo_softreset; } + child_pdev = of_find_device_by_node(child); + if (!child_pdev) { + dev_err(dev, "failed to find dwc3 core device\n"); + ret = -ENODEV; + goto undo_softreset; + } + + dwc3_data->dr_mode = of_usb_get_dr_mode(child_pdev->dev.of_node); + /* * Configure the USB port as device or host according to the static * configuration passed from DT. -- cgit v1.2.3