Messages in this thread Patch in this message | | | From | Stephen Boyd <> | Subject | [PATCH v5 08/23] usb: chipidea: Remove locking in ci_udc_start() | Date | Mon, 17 Oct 2016 18:56:21 -0700 |
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We don't call hw_device_reset() with the ci->lock held, so it doesn't seem like this lock here is protecting anything. Let's just remove it. This allows us to call sleeping functions like phy_init() from within the CI_HDRC_CONTROLLER_RESET_EVENT hook.
Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> --- drivers/usb/chipidea/udc.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 661f43fe0f9e..145b1fd86f58 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1725,7 +1725,6 @@ static int ci_udc_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget); - unsigned long flags; int retval = -ENOMEM; if (driver->disconnect == NULL) @@ -1752,7 +1751,6 @@ static int ci_udc_start(struct usb_gadget *gadget, pm_runtime_get_sync(&ci->gadget.dev); if (ci->vbus_active) { - spin_lock_irqsave(&ci->lock, flags); hw_device_reset(ci); } else { usb_udc_vbus_handler(&ci->gadget, false); @@ -1761,7 +1759,6 @@ static int ci_udc_start(struct usb_gadget *gadget, } retval = hw_device_state(ci, ci->ep0out->qh.dma); - spin_unlock_irqrestore(&ci->lock, flags); if (retval) pm_runtime_put_sync(&ci->gadget.dev); -- 2.10.0.297.gf6727b0
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