Ezequiel, Not sure, but this may help you: http://lwn.net/Articles/464276/ []'s Peter 2012/3/14 Ezequiel García <elezegarcia@xxxxxxxxx>: > Hi, > > I'm writing a video capture device and have a doubt about how to > correctly print to screen. > > First, I suppose I should follow the rule "don't print unless there is > something surprising to say", right? > Second, I've found I need to print in a very verbose manner > at developing stage so I should implement a debug param. > I will probably adopt videobuf2 way (like many others) of > defining a macro (dprintk or something). > > However, reading the source I've found there isn't a unified > way to do this: some use printk (as defined macros), others > use v4l_xxx, others use dev_xxx. > > I've adopted the latter, because I thought there could > be many devices plugged, and using dev_xxx with > the usb_device->dev helps seeing which is tracing. > > I'm not really sure if it is ok so I would love to > hear some opinions about this sensible issue. > > Thanks! > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Peter Senna Tschudin peter.senna@xxxxxxxxx gpg id: 48274C36 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
