Hello, On Tue, Aug 27, 2013 at 05:21:44PM +0800, Gu Zheng wrote: > >> OK, so the patch below is quick and dirty and overkill, but it should make the > >> splat go away at least. > > > > And if this patch does make the splat go away for you, please also test the > > appended one (Tejun, thanks for the hint!). > > > > I'll address the ACPI part differently later. > > What about changing device_hotplug_lock and acpi_scan_lock to rwsem? like the > attached one(With a preliminary test, it also can make the splat go away).:) Hmmm.. I don't get it. How is introducing another rwlock whic may cause the operation, even reading the status, to fail randomly a better option? It's harier and more brittle. We probably want to implement better solution in sysfs for files which interact with device addition / removal paths but for now I think Rafael's patch is the right direction. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
