linux-kernel - [PATCH 4.9 052/103] usb: dwc2: host: use msleep() for long delay

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20170511141214.889463510@linuxfoundation.org>
Date:   Thu, 11 May 2017 16:12:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Nicholas Mc Guire <hofrat@...dl.org>,
        John Youn <johnyoun@...opsys.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: [PATCH 4.9 052/103] usb: dwc2: host: use msleep() for long delay

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nicholas Mc Guire <hofrat@...dl.org>

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@...dl.org>
Signed-off-by: John Youn <johnyoun@...opsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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);
 }
 
 /*