Messages in this thread | | | Date | Wed, 20 Dec 2006 19:51:17 -0800 | From | Andrew Morton <> | Subject | Re: Changes to sysfs PM layer break userspace |
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On Tue, 19 Dec 2006 19:29:13 -0800 David Brownell <david-b@pacbell.net> wrote:
> On Tuesday 19 December 2006 6:15 pm, Andrew Morton wrote: > > On Tue, 19 Dec 2006 13:34:49 -0800 > > David Brownell <david-b@pacbell.net> wrote: > > > > > Documentation/feature-removal-schedule.txt has warned about this since > > > August > > > > Nobody reads that. > > > > Please, wherever possible, put a nice printk("this is going away") in the code > > when planning these things. > > > Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> > > Index: g26/drivers/base/power/sysfs.c > =================================================================== > --- g26.orig/drivers/base/power/sysfs.c 2006-09-27 16:19:00.000000000 -0700 > +++ g26/drivers/base/power/sysfs.c 2006-12-19 19:27:25.000000000 -0800 > @@ -42,9 +42,17 @@ static ssize_t state_show(struct device > > static ssize_t state_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t n) > { > + static int warned; > pm_message_t state; > int error = -EINVAL; > > + if (!warned) { > + printk(KERN_WARNING > + "*** WARNING *** sysfs devices/.../power/state files " > + "are only for testing, and will be removed\n"); > + warned = error; > + } > + > /* disallow incomplete suspend sequences */ > if (dev->bus && (dev->bus->suspend_late || dev->bus->resume_early)) > return error;
Well that's not much use. It tells people "hey, we broke it". They already knew that.
What we should do is to revert 047bda36150d11422b2c7bacca1df324c909c0b3 and add a printk("hey, we'll be breaking this soon").
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