On Fri, Apr 11, 2014 at 06:28:40PM +0530, AYAN KUMAR HALDER wrote: > Hi, > > I am working with the linux hibernation code( swsusp hibernation > framework) on an ARM based custom SOC. I am using some drivers like > Nand Flash Controller driver as loadable modules. > > As per my understanding , during hibernation kernel calls suspend for > all the drivers while creating a snapshot. During resume, after the > kernel resumes the snapshot (from late_initcall - software_resme) , > the kernel calls resume for all the drivers. > > As nand and some other drivers do not support suspend/resume, thus > they fail to work on system resume. So is it fine to call > driver_unregister/driver_register during hibernation/resume for the > drivers which do not support suspend/resume. I do not want the user to > manually remove/insert the drivers on suspend/resume. Don't call unregister/register for suspend/resume, that's overkill and isn't right. Have you taken a look at all of the in-kernel documentation about suspend/resume that is in the Documentation/ directory? If not, please do so, it should answer these questions for you as to how to fix up your drivers. Hope this helps, greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
