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. This happens as the USB PHY mode gets disabled too early.
Cc: Jacopo Mondi <[email protected]> Cc: Marcel Partap <[email protected]> Cc: Merlijn Wajer <[email protected]> Cc: Michael Scott <[email protected]> Cc: NeKit <[email protected]> Cc: Pavel Machek <[email protected]> Cc: Sebastian Reichel <[email protected]> Fixes: 6d6ce40f63af ("phy: cpcap-usb: Add CPCAP PMIC USB support") Signed-off-by: Tony Lindgren <[email protected]> --- drivers/phy/motorola/phy-cpcap-usb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/phy/motorola/phy-cpcap-usb.c b/drivers/phy/motorola/phy-cpcap-usb.c --- a/drivers/phy/motorola/phy-cpcap-usb.c +++ b/drivers/phy/motorola/phy-cpcap-usb.c @@ -274,12 +274,12 @@ static void cpcap_usb_detect(struct work_struct *work) return; } - /* Default to debug UART mode */ - error = cpcap_usb_set_uart_mode(ddata); + error = musb_mailbox(MUSB_VBUS_OFF); if (error) goto out_err; - error = musb_mailbox(MUSB_VBUS_OFF); + /* Default to debug UART mode */ + error = cpcap_usb_set_uart_mode(ddata); if (error) goto out_err; -- 2.23.0
