From: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Date: Sat, 10 Aug 2019 15:04:58 +0000 (+0200)
Subject: usb: host: fotg2: restart hcd after port reset
X-Git-Tag: v4.4.191~25
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cf3f1cd77bafef468e076ad5ca963dc49d30000;p=thirdparty%2Fkernel%2Fstable.git

usb: host: fotg2: restart hcd after port reset

[ Upstream commit 777758888ffe59ef754cc39ab2f275dc277732f4 ]

On the Gemini SoC the FOTG2 stalls after port reset
so restart the HCD after each port reset.

Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190810150458.817-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index 2341af4f34909..11b3a8c57eabc 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -1653,6 +1653,10 @@ static int fotg210_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 			/* see what we found out */
 			temp = check_reset_complete(fotg210, wIndex, status_reg,
 					fotg210_readl(fotg210, status_reg));
+
+			/* restart schedule */
+			fotg210->command |= CMD_RUN;
+			fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command);
 		}
 
 		if (!(temp & (PORT_RESUME|PORT_RESET))) {