mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-24 09:50:04 +00:00
Code Issues Releases Wiki Activity

usb: dwc2: gadget: move gadget resume after the core is in L0 state

Browse source 
When the remote wakeup interrupt is triggered, lx_state is resumed from L2
to L0 state. But when the gadget resume is called, lx_state is still L2.
This prevents the resume callback to queue any request. Any attempt
to queue a request from resume callback will result in:
- "submit request only in active state" debug message to be issued
- dwc2_hsotg_ep_queue() returns -EAGAIN

Call the gadget resume routine after the core is in L0 state.

Fixes: f81f46e1f5 ("usb: dwc2: implement hibernation during bus suspend/resume")

Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Fabrice Gasnier 2020-04-23 13:55:53 +02:00 committed by Felipe Balbi
parent 43cd002387
commit 8c935deace
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/usb/dwc2/core_intr.c
View file

@ -416,10 +416,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
if (ret && (ret != -ENOTSUPP))
dev_err(hsotg->dev, "exit power_down failed\n");
/* Change to L0 state */
hsotg->lx_state = DWC2_L0;
call_gadget(hsotg, resume);
} else {
/* Change to L0 state */
hsotg->lx_state = DWC2_L0;
}
/* Change to L0 state */
hsotg->lx_state = DWC2_L0;
} else {
if (hsotg->params.power_down)
return;