Messages in this thread Patch in this message | | | From | Kever Yang <> | Subject | [PATCH v2] usb: dwc2: resume root hub when device detect with suspend state | Date | Tue, 18 Nov 2014 09:21:24 +0800 |
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After we implement the bus_suspend/resume, auto suspend id enabled. The root hub will be auto suspend if there is no device connected, we need to resume the root hub when a device connect detect.
This patch tested on rk3288.
Signed-off-by: Roy Li <roy.li@rock-chips.com> Signed-off-by: Kever Yang <kever.yang@rock-chips.com> ---
Changes in v2: - add definition for hcd structure - remove check for bus->root_hub
drivers/usb/dwc2/hcd_intr.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index 551ba87..680206f 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -329,6 +329,7 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg) { u32 hprt0; u32 hprt0_modify; + struct usb_hcd *hcd = (struct usb_hcd *)hsotg->priv; dev_vdbg(hsotg->dev, "--Port Interrupt--\n"); @@ -354,6 +355,10 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg) hsotg->flags.b.port_connect_status = 1; hprt0_modify |= HPRT0_CONNDET; + /* resume root hub? */ + if (hcd->state == HC_STATE_SUSPENDED) + usb_hcd_resume_root_hub(hcd); + /* * The Hub driver asserts a reset when it sees port connect * status change flag -- 1.9.1
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