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| author | Michal Suchanek <msuchanek@suse.de> | 2019-08-18 10:55:28 +0200 |
|---|---|---|
| committer | marex <marex@chi.lan> | 2019-09-11 10:11:29 +0200 |
| commit | 9dcab2c4d2cb50ab1864c818b82a72393c160236 (patch) | |
| tree | 661f61114a194299966e0e1f1376afba54883afb /drivers/usb/host | |
| parent | 3437121c037f502a3b0faaec97059777034a1ead (diff) | |
| download | u-boot-9dcab2c4d2cb50ab1864c818b82a72393c160236.zip u-boot-9dcab2c4d2cb50ab1864c818b82a72393c160236.tar.gz u-boot-9dcab2c4d2cb50ab1864c818b82a72393c160236.tar.bz2 | |
dwc2: use the nonblock argument in submit_int_msg
An USB 1.1 keyboard connected to dwc2 through a high-speed hub does not
report status until it changes. With this patch you can enable keyboard
by pressing a key while USB devices are probed. Without a keypress no
state is reported and the probe times out. We don't want to wait for a
keypress or timeout while polling for keypresses so implement an int_msg
nonblock variant that exits early on error.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/dwc2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index bc61662..350d820 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -1123,7 +1123,7 @@ int _submit_int_msg(struct dwc2_priv *priv, struct usb_device *dev, return -ETIMEDOUT; } ret = _submit_bulk_msg(priv, dev, pipe, buffer, len); - if (ret != -EAGAIN) + if ((ret != -EAGAIN) || nonblock) return ret; } } |