usb: dwc3: core: modify IO memory resource after deferred probe completes

When deferred probe happens driver will try to ioremap multiple times
and will fail. Memory resource.start variable is a global variable,
modifications in this field will be accumulated on every probe.
Fix this by moving the above operations after driver hold all
required PHY's.

Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 16 insertions, 15 deletions

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index dfbc1f0fc0e3..da0a4b8b33ed 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -384,21 +384,6 @@ static int dwc3_probe(struct platform_device *pdev)
                 dev_err(dev, "missing memory resource\n");
                 return -ENODEV;
         }
-        dwc->xhci_resources[0].start = res->start;
-        dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
-                                        DWC3_XHCI_REGS_END;
-        dwc->xhci_resources[0].flags = res->flags;
-        dwc->xhci_resources[0].name = res->name;
-
-        res->start += DWC3_GLOBALS_REGS_START;
-
-         /*
-          * Request memory region but exclude xHCI regs,
-          * since it will be requested by the xhci-plat driver.
-          */
-        regs = devm_ioremap_resource(dev, res);
-        if (IS_ERR(regs))
-                return PTR_ERR(regs);
 
         if (node) {
                 dwc->maximum_speed = of_usb_get_maximum_speed(node);
@@ -452,6 +437,22 @@ static int dwc3_probe(struct platform_device *pdev)
                 return -EPROBE_DEFER;
         }
 
+        dwc->xhci_resources[0].start = res->start;
+        dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
+                                        DWC3_XHCI_REGS_END;
+        dwc->xhci_resources[0].flags = res->flags;
+        dwc->xhci_resources[0].name = res->name;
+
+        res->start += DWC3_GLOBALS_REGS_START;
+
+        /*
+         * Request memory region but exclude xHCI regs,
+         * since it will be requested by the xhci-plat driver.
+         */
+        regs = devm_ioremap_resource(dev, res);
+        if (IS_ERR(regs))
+                return PTR_ERR(regs);
+
         usb_phy_set_suspend(dwc->usb2_phy, 0);
         usb_phy_set_suspend(dwc->usb3_phy, 0);