On Thu, Nov 09, 2017 at 11:49:10AM -0600, Mario Limonciello wrote: > dell-wmi and dell-smbios-wmi are dependent upon dell-wmi-descriptor > finishing probe successfully to probe themselves. > > Currently if dell-wmi-descriptor fails probing in a non-recoverable way > (such as invalid header) dell-wmi and dell-smbios-wmi will continue to > try to redo probing due to deferred probing. > > To solve this have the dependent drivers query the dell-wmi-descriptor > driver whether the descriptor has been determined valid. The possible > results are: > -ENODEV: Descriptor GUID missing from WMI bus > -EPROBE_DEFER: Descriptor not yet probed, dependent driver should wait > and use deferred probing > < 0: Descriptor probed, invalid. Dependent driver should return an > error. > 0: Successful descriptor probe, dependent driver can continue > > Successful descriptor probe still doesn't mean that the descriptor driver > is necessarily bound at the time of initialization of dependent driver. > Userspace can unbind the driver, so all methods used from driver > should still be verified to return success values otherwise deferred > probing be used.
This is a good improvement. Will give Pali a chance to offer his signature, and will merge then. -- Darren Hart VMware Open Source Technology Center
