usb: chipidea: clear otg interrupt status for otg capable controller

We need to do it for all otg capable controller, not only peripheral
featured otg capable controller, otherwise, the host-only role, but
otg capable controller may be responded by otg interrupt.

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 6d9dc2d..2337354 100644 (file)
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -649,8 +649,12 @@ static void ci_get_otg_capable(struct ci_hdrc *ci)
                ci->is_otg = (hw_read(ci, CAP_DCCPARAMS,
                                DCCPARAMS_DC | DCCPARAMS_HC)
                                        == (DCCPARAMS_DC | DCCPARAMS_HC));
-       if (ci->is_otg)
+       if (ci->is_otg) {
                dev_dbg(ci->dev, "It is OTG capable controller\n");
+               /* Disable and clear all OTG irq */
+               hw_write_otgsc(ci, OTGSC_INT_EN_BITS | OTGSC_INT_STATUS_BITS,
+                                                       OTGSC_INT_STATUS_BITS);
+       }
 }
 
 static int ci_hdrc_probe(struct platform_device *pdev)
@@ -749,9 +753,6 @@ static int ci_hdrc_probe(struct platform_device *pdev)
        }
 
        if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) {
-               /* Disable and clear all OTG irq */
-               hw_write_otgsc(ci, OTGSC_INT_EN_BITS | OTGSC_INT_STATUS_BITS,
-                                                       OTGSC_INT_STATUS_BITS);
                ret = ci_hdrc_otg_init(ci);
                if (ret) {
                        dev_err(dev, "init otg fails, ret = %d\n", ret);