From: Tony Lindgren <tony@atomide.com>
Date: Sun, 22 Dec 2019 18:00:19 +0000 (-0800)
Subject: phy: cpcap-usb: Fix flakey host idling and enumerating of devices
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=049226b9fd7442149dcbcf55f15408f5973cceda;p=linux.git

phy: cpcap-usb: Fix flakey host idling and enumerating of devices

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>
---

diff --git a/drivers/phy/motorola/phy-cpcap-usb.c b/drivers/phy/motorola/phy-cpcap-usb.c
index eeb47fddf64b7..9a38741d3546d 100644
--- a/drivers/phy/motorola/phy-cpcap-usb.c
+++ b/drivers/phy/motorola/phy-cpcap-usb.c
@@ -283,13 +283,13 @@ static void cpcap_usb_detect(struct work_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;