From: Tony Lindgren tony@atomide.com
commit 049226b9fd7442149dcbcf55f15408f5973cceda upstream.
We must let the USB host idle things properly before we switch to debug UART mode. Otherwise the USB host may never idle after disconnecting devices, and that causes the next enumeration to be flakey.
Cc: Jacopo Mondi jacopo@jmondi.org Cc: Marcel Partap mpartap@gmx.net Cc: Merlijn Wajer merlijn@wizzup.org Cc: Michael Scott hashcode0f@gmail.com Cc: NeKit nekit1000@gmail.com Cc: Pavel Machek pavel@ucw.cz Cc: Sebastian Reichel sre@kernel.org Acked-by: Pavel Machek pavel@ucw.cz Fixes: 6d6ce40f63af ("phy: cpcap-usb: Add CPCAP PMIC USB support") Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Kishon Vijay Abraham I kishon@ti.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/phy/motorola/phy-cpcap-usb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/phy/motorola/phy-cpcap-usb.c +++ b/drivers/phy/motorola/phy-cpcap-usb.c @@ -281,13 +281,13 @@ static void cpcap_usb_detect(struct work return; }
+ cpcap_usb_try_musb_mailbox(ddata, MUSB_VBUS_OFF); + /* Default to debug UART mode */ error = cpcap_usb_set_uart_mode(ddata); if (error) goto out_err;
- cpcap_usb_try_musb_mailbox(ddata, MUSB_VBUS_OFF); - dev_dbg(ddata->dev, "set UART mode\n");
return;