On Tue, Mar 30, 2021 at 09:27:17PM +0200, Martin Kaiser wrote: > > What in-kernel misc drivers do not do that that you feel should? > > My misunderstanding was that quite a few drivers set the parent pointer > but hardly anyone uses the parent pointer in the file_operations. What parent pointer in struct file_operations? I don't see one... > It seems that most drivers have their miscdevice as part of their global > structure and use container_of in the file_operations, e.g. ipmb_read in > drivers/char/ipmi/ipmb_dev_int.c. That's one way to use it, there are I think at least 3 ways to use it, maybe more... Don't confuse the struct device parent pointer with the private pointer to get back to your local device-specific data. They are different things. thanks, greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
