This allow same IO space to be shared between HCD and Device
controller driver. Which can be loaded simultaneously and
started/stopped on demand by USB OTG PHY driver.
Signed-off-by: Ivan T. Ivanov <ivan.iva...@linaro.org>
---
drivers/usb/host/ehci-msm.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c
index 9db74ca..f059e15 100644
--- a/drivers/usb/host/ehci-msm.c
+++ b/drivers/usb/host/ehci-msm.c
@@ -88,13 +88,17 @@ static int ehci_msm_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (!res)
+ return -ENODEV;
+
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto put_hcd;
}
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
/*
* OTG driver takes care of PHY initialization, clock management,
--
1.9.1
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