Hi Olof, On Sat, Sep 8, 2018 at 6:18 PM, Olof Johansson <olof@xxxxxxxxx> wrote: > Hi, > > On Fri, Aug 3, 2018 at 10:53 AM, Jolly Shah <jolly.shah@xxxxxxxxxx> wrote: >> From: Rajan Vaja <rajanv@xxxxxxxxxx> >> >> Add ZynqMP firmware IOCTL API to control and configure >> devices like PLLs, SD, Gem, etc. >> >> Signed-off-by: Rajan Vaja <rajanv@xxxxxxxxxx> >> Signed-off-by: Jolly Shah <jollys@xxxxxxxxxx> > > This patch worries me somewhat. It's a transparent pass-through ioctl > driver. Is there a spec available for what the implemented IOCTLs are? > > Should some of them be proper drivers instead of an opaque > pass-through like this? Could some of them have stability impact on > the platform such that there are security concerns and the list of > arguments should somehow be sanitized? I tend to agree with this, good catch. > What's the intended usecase anyway? Just a debug tool during > development, or something that you expect heavy use of by some > userspace middleware? I suspect it is another attempt to make userspace clocks/plls work? Scary. Cheers, Moritz
