From: Greg KH <greg@kroah.com>
To: Valdis.Kletnieks@vt.edu
Cc: Grant Likely <grant.likely@secretlab.ca>,
"G, Manjunath Kondaiah" <manjugk@ti.com>,
linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Dilan Lee <dilee@nvidia.com>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Manjunath GKondaiah <manjunath.gkondaiah@linaro.org>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 1/5] drivercore: add new error value for deferred probe
Date: Fri, 7 Oct 2011 17:12:37 -0700 [thread overview]
Message-ID: <20111008001237.GA30551@kroah.com> (raw)
In-Reply-To: <32004.1318030113@turing-police.cc.vt.edu>
On Fri, Oct 07, 2011 at 07:28:33PM -0400, Valdis.Kletnieks@vt.edu wrote:
> On Fri, 07 Oct 2011 16:12:45 MDT, Grant Likely said:
> > On Fri, Oct 7, 2011 at 12:43 AM, Greg KH <greg@kroah.com> wrote:
> > > On Fri, Oct 07, 2011 at 10:33:06AM +0500, G, Manjunath Kondaiah wrote:
>
> > >> +#define EPROBE_DEFER 517 /* restart probe again after some time */
> > >
> > > Can we really do this?
>
> > According to Arnd, yes this is okay.
>
> > > Isn't this some user/kernel api here?
>
> > > What's wrong with just "overloading" on top of an existing error code?
> > > Surely one of the other 516 types could be used here, right?
>
> > overloading makes it really hard to find the users at a later date.
>
> Would proposing '#define EPROBE_DEFER EAGAIN' be acceptable to everybody? That
> would allow overloading EAGAIN, but still make it easy to tell the usages apart
> if we need to separate them later...
Yes, please do that, it is what USB does for it's internal error code
handling.
greg k-h
WARNING: multiple messages have this Message-ID (diff)
From: greg@kroah.com (Greg KH)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/5] drivercore: add new error value for deferred probe
Date: Fri, 7 Oct 2011 17:12:37 -0700 [thread overview]
Message-ID: <20111008001237.GA30551@kroah.com> (raw)
In-Reply-To: <32004.1318030113@turing-police.cc.vt.edu>
On Fri, Oct 07, 2011 at 07:28:33PM -0400, Valdis.Kletnieks at vt.edu wrote:
> On Fri, 07 Oct 2011 16:12:45 MDT, Grant Likely said:
> > On Fri, Oct 7, 2011 at 12:43 AM, Greg KH <greg@kroah.com> wrote:
> > > On Fri, Oct 07, 2011 at 10:33:06AM +0500, G, Manjunath Kondaiah wrote:
>
> > >> +#define EPROBE_DEFER 517 ? ? /* restart probe again after some time */
> > >
> > > Can we really do this?
>
> > According to Arnd, yes this is okay.
>
> > > ?Isn't this some user/kernel api here?
>
> > > What's wrong with just "overloading" on top of an existing error code?
> > > Surely one of the other 516 types could be used here, right?
>
> > overloading makes it really hard to find the users at a later date.
>
> Would proposing '#define EPROBE_DEFER EAGAIN' be acceptable to everybody? That
> would allow overloading EAGAIN, but still make it easy to tell the usages apart
> if we need to separate them later...
Yes, please do that, it is what USB does for it's internal error code
handling.
greg k-h
next prev parent reply other threads:[~2011-10-08 0:13 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-07 5:33 [PATCH 0/5] Driver Probe Deferral Mechanism G, Manjunath Kondaiah
2011-10-07 5:33 ` [PATCH 1/5] drivercore: add new error value for deferred probe G, Manjunath Kondaiah
2011-10-07 6:43 ` Greg KH
2011-10-07 6:43 ` Greg KH
2011-10-07 10:00 ` Mark Brown
2011-10-07 10:00 ` Mark Brown
2011-10-07 22:12 ` Grant Likely
2011-10-07 22:12 ` Grant Likely
2011-10-07 23:28 ` Valdis.Kletnieks
2011-10-07 23:28 ` Valdis.Kletnieks
2011-10-07 23:28 ` Valdis.Kletnieks at vt.edu
2011-10-08 0:12 ` Greg KH [this message]
2011-10-08 0:12 ` Greg KH
2011-10-09 22:59 ` Grant Likely
2011-10-09 22:59 ` Grant Likely
2011-10-09 22:59 ` Grant Likely
2011-10-10 1:06 ` Greg KH
2011-10-10 1:06 ` Greg KH
2011-10-10 1:06 ` Greg KH
2011-10-12 6:18 ` G, Manjunath Kondaiah
2011-10-12 6:18 ` G, Manjunath Kondaiah
2011-10-13 4:10 ` Grant Likely
2011-10-13 4:10 ` Grant Likely
2011-10-07 5:33 ` [PATCH 2/5] drivercore: Add driver probe deferral mechanism G, Manjunath Kondaiah
2011-10-07 6:49 ` Greg KH
2011-10-07 6:49 ` Greg KH
2011-10-07 20:57 ` Josh Triplett
2011-10-07 20:57 ` Josh Triplett
2011-10-07 21:23 ` Greg KH
2011-10-07 21:23 ` Greg KH
2011-10-08 4:03 ` Josh Triplett
2011-10-08 4:03 ` Josh Triplett
2011-10-08 15:55 ` Greg KH
2011-10-08 15:55 ` Greg KH
2011-10-08 18:18 ` Josh Triplett
2011-10-08 18:18 ` Josh Triplett
2011-10-10 17:37 ` Andrei Warkentin
2011-10-10 17:37 ` Andrei Warkentin
2011-10-11 12:29 ` Ming Lei
2011-10-11 12:29 ` Ming Lei
2011-10-13 4:09 ` Grant Likely
2011-10-13 4:09 ` Grant Likely
2011-10-13 14:18 ` Ming Lei
2011-10-13 14:18 ` Ming Lei
2011-10-13 14:31 ` Alan Stern
2011-10-13 14:31 ` Alan Stern
2011-10-13 14:31 ` Alan Stern
2011-10-13 15:21 ` Ming Lei
2011-10-13 15:21 ` Ming Lei
2011-10-13 16:04 ` Alan Stern
2011-10-13 16:04 ` Alan Stern
2011-10-13 16:04 ` Alan Stern
2011-10-14 0:13 ` Ming Lei
2011-10-14 0:13 ` Ming Lei
2011-10-13 17:15 ` Grant Likely
2011-10-13 17:15 ` Grant Likely
2011-10-13 18:16 ` Alan Stern
2011-10-13 18:16 ` Alan Stern
2011-10-13 18:16 ` Alan Stern
2011-10-13 18:28 ` Grant Likely
2011-10-13 18:28 ` Grant Likely
2011-10-14 15:39 ` Alan Stern
2011-10-14 15:39 ` Alan Stern
2011-10-14 15:39 ` Alan Stern
2011-10-14 16:17 ` Grant Likely
2011-10-14 16:17 ` Grant Likely
2011-10-14 16:33 ` Alan Stern
2011-10-14 16:33 ` Alan Stern
2011-10-14 16:33 ` Alan Stern
2011-10-14 17:20 ` Grant Likely
2011-10-14 17:20 ` Grant Likely
2011-10-14 17:33 ` Alan Stern
2011-10-14 17:33 ` Alan Stern
2011-10-14 17:33 ` Alan Stern
2011-10-14 18:25 ` Grant Likely
2011-10-14 18:25 ` Grant Likely
2011-10-14 18:39 ` Alan Stern
2011-10-14 18:39 ` Alan Stern
2011-10-14 18:39 ` Alan Stern
2011-10-14 19:07 ` Grant Likely
2011-10-14 19:07 ` Grant Likely
2011-10-14 18:56 ` David Daney
2011-10-14 18:56 ` David Daney
2011-10-14 19:03 ` Grant Likely
2011-10-14 19:03 ` Grant Likely
2011-10-14 19:03 ` Grant Likely
2011-10-14 19:09 ` David Daney
2011-10-14 19:09 ` David Daney
2011-10-14 15:37 ` Alan Stern
2011-10-14 15:37 ` Alan Stern
2011-10-14 15:37 ` Alan Stern
2011-10-12 7:04 ` G, Manjunath Kondaiah
2011-10-12 7:04 ` G, Manjunath Kondaiah
2011-10-07 21:28 ` Grant Likely
2011-10-07 21:28 ` Grant Likely
2011-10-07 21:28 ` Grant Likely
2011-10-07 5:33 ` [PATCH 3/5] regulator: Support driver probe deferral G, Manjunath Kondaiah
2011-10-07 5:33 ` [PATCH 4/5] gpiolib: handle deferral probe error G, Manjunath Kondaiah
2011-10-07 10:06 ` Alan Cox
2011-10-07 10:06 ` Alan Cox
2011-10-07 10:06 ` Alan Cox
2011-10-07 22:09 ` Grant Likely
2011-10-07 22:09 ` Grant Likely
2011-10-12 6:14 ` G, Manjunath Kondaiah
2011-10-12 6:14 ` G, Manjunath Kondaiah
2011-10-12 6:14 ` G, Manjunath Kondaiah
2011-10-13 4:12 ` Grant Likely
2011-10-13 4:12 ` Grant Likely
2011-10-07 5:33 ` [PATCH 5/5] omap: hsmmc: use platform_driver_register G, Manjunath Kondaiah
2011-10-07 6:50 ` [PATCH 0/5] Driver Probe Deferral Mechanism Greg KH
2011-10-07 6:50 ` Greg KH
2011-10-07 6:50 ` Greg KH
2011-10-07 7:37 ` G, Manjunath Kondaiah
2011-10-07 7:37 ` G, Manjunath Kondaiah
2011-10-07 7:37 ` G, Manjunath Kondaiah
-- strict thread matches above, loose matches on Subject: below --
2011-10-07 5:05 G, Manjunath Kondaiah
2011-10-07 5:05 ` [PATCH 1/5] drivercore: add new error value for deferred probe G, Manjunath Kondaiah
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