May 30, 2012
5:37 p.m.
On Thu, May 31, 2012 at 1:20 AM, Gaurav Jain <gjainroorkee@gmail.com> wrote: Hi Gaurav,
Those are forward declarations as they are being used in defining struct bus_attribute. It's nothing special about GNU-C. That's the case for ANSI-C too. Pretty standard.
Hmmm.., that is to say, they may be used before definitions in this file or defined in other files like 'struct iommu_ops;' field (Actually, i can not find this field's definition in this file). However, if it has been defined in other header files, we need not declare here, right? -- Thanks Harry Wei