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usb: gsi: Prevent function remote-wakeup without function suspend

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Some hosts enable function remote-wakeup immediately after
enumeration. But they don't perform function_suspend before U3
and also don't disable function remote-wakeup even if entering
deep sleep state and don't intend to wakeup from USB. One of the
reason could be that they rely on device to initiate remote-wakeup
only if it function suspended. Hence, update the check to initiate
function remote-wakeup only if device is function suspended.

Change-Id: I3d6bb817d9174f94051b1e1ef74dc9c941c66f4c
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
This commit is contained in:
Manu Gautam 2019-11-01 11:15:11 +05:30 • committed by Rohith Kollalsi
commit 0871614c5d
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/function/f_gsi.c
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@ -38,7 +38,8 @@ static inline bool usb_gsi_remote_wakeup_allowed(struct usb_function *f)
struct f_gsi *gsi = func_to_gsi(f);
if (f->config->cdev->gadget->speed >= USB_SPEED_SUPER)
remote_wakeup_allowed = gsi->func_wakeup_allowed;
remote_wakeup_allowed =
gsi->func_is_suspended ? gsi->func_wakeup_allowed : false;
else
remote_wakeup_allowed =
usb_get_remote_wakeup_status(f->config->cdev->gadget);