From: Nicholas Mc Guire <hofrat@osadl.org>
Date: Mon, 23 Jan 2017 23:00:40 +0000 (-0800)
Subject: usb: dwc2: host: use msleep() for long delay
X-Git-Tag: v4.10.16~58
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5605e5c50f342addd16c2bb9b3efb7d5ee7c7423;p=thirdparty%2Fkernel%2Fstable.git

usb: dwc2: host: use msleep() for long delay

commit d3fe81d2ccc41b355e494413115c0c7c18426fa1 upstream.

ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. Fix up the 100ms delays here passing the adjusted "min"
value to msleep(). This helps reduce the load on the hrtimer subsystem.

Link: http://lkml.org/lkml/2017/1/11/377
Fixes: commit 2938fc63e0c2 ("usb: dwc2: Properly account for the force mode delays")
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index 11d8ae9aead1a..439a21b8a0560 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -455,7 +455,7 @@ void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg)
 	dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG);
 
 	if (dwc2_iddig_filter_enabled(hsotg))
-		usleep_range(100000, 110000);
+		msleep(100);
 }
 
 /*