Revert "usb: chipidea: remove duplicate dev_set_drvdata for host_start"

This reverts commit 14b4099c074f2ddf4d84b22d370170e61b527529

It moved platform_set_drvdata(pdev, ci) before hcd is created,
and the hcd will assign itself as ci controller's drvdata during
the hcd creation function (in usb_create_shared_hcd), so it
overwrites the real ci's drvdata which we want to use.

So, if the controller is at host mode, the system suspend
API will get the wrong struct ci_hdrc pointer, and cause the
oops.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 5b9825a..a57dc88 100644 (file)
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -669,7 +669,6 @@ static int ci_hdrc_probe(struct platform_device *pdev)
        if (!ci)
                return -ENOMEM;
 
-       platform_set_drvdata(pdev, ci);
        ci->dev = dev;
        ci->platdata = dev_get_platdata(dev);
        ci->imx28_write_fix = !!(ci->platdata->flags &
@@ -783,6 +782,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
                }
        }
 
+       platform_set_drvdata(pdev, ci);
        ret = devm_request_irq(dev, ci->irq, ci_irq, IRQF_SHARED,
                        ci->platdata->name, ci);
        if (ret)

diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index c1694cf..48731d0 100644 (file)
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -91,6 +91,7 @@ static int host_start(struct ci_hdrc *ci)
        if (!hcd)
                return -ENOMEM;
 
+       dev_set_drvdata(ci->dev, ci);
        hcd->rsrc_start = ci->hw_bank.phys;
        hcd->rsrc_len = ci->hw_bank.size;
        hcd->regs = ci->hw_bank.abs;