From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: musb-hdrc: "Vbus off, timeout 1100 msec" message does not belong in sysfs Date: Thu, 9 Jul 2015 23:46:10 +0200 Message-ID: <20150709214610.GA20890@amd> References: <20150709213922.GA32698@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20150709213922.GA32698@amd> Sender: linux-kernel-owner@vger.kernel.org To: Greg KH , balbi@ti.com, bigeasy@linutronix.de, george.cherian@ti.com, varkabhadram@gmail.com, linux-kernel@vger.kernel.org Cc: pali.rohar@gmail.com, sre@debian.org, sre@ring0.de, linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com List-Id: linux-omap@vger.kernel.org On Thu 2015-07-09 23:39:22, Pavel Machek wrote: > Hi! > > sysfs should contain one value per file. This one has at least two, > with nice english sentence as a bonus. > > root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# > cat vbus > Vbus off, timeout 1100 msec > > :-(. Plus, documentation for this is nowhere to be seen: pavel@amd:/data/l/linux-n900$ grep -ri musb Documentation/ABI/ pavel@amd:/data/l/linux-n900$ ..which is a shame, because it is not really clear how to use this one: root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# cat mode b_idle root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# echo a_suspend > mode -bash: echo: write error: Invalid argument root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# echo a > mode -bash: echo: write error: Invalid argument root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# echo a_host > mode -bash: echo: write error: Invalid argument root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# echo b_host > mode -bash: echo: write error: Invalid argument root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# echo a_idle > mode -bash: echo: write error: Invalid argument root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# echo b_wait_acon > mode -bash: echo: write error: Invalid argument root@n900:/sys/devices/platform/68000000.ocp/480ab000.usb_otg_hs/musb-hdrc.0.auto# Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html