This is a note to let you know that I've just added the patch titled
usb: dwc2: host: use msleep() for long delay
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-dwc2-host-use-msleep-for-long-delay.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d3fe81d2ccc41b355e494413115c0c7c18426fa1 Mon Sep 17 00:00:00 2001
From: Nicholas Mc Guire <hofrat@xxxxxxxxx>
Date: Mon, 23 Jan 2017 15:00:40 -0800
Subject: usb: dwc2: host: use msleep() for long delay
From: Nicholas Mc Guire <hofrat@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: John Youn <johnyoun@xxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc2/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -455,7 +455,7 @@ static void dwc2_clear_force_mode(struct
dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG);
if (dwc2_iddig_filter_enabled(hsotg))
- usleep_range(100000, 110000);
+ msleep(100);
}
/*
Patches currently in stable-queue which might be from hofrat@xxxxxxxxx are
queue-4.9/usb-dwc2-host-use-msleep-for-long-delay.patch