From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [PATCH V3 04/12] misc: xilinx_sdfec: Add open, close and ioctl Date: Sat, 4 May 2019 11:01:07 +0200 Message-ID: <20190504090107.GC13840@kroah.com> References: <1556402706-176271-1-git-send-email-dragan.cvetic@xilinx.com> <1556402706-176271-5-git-send-email-dragan.cvetic@xilinx.com> <20190502172345.GC1874@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Dragan Cvetic Cc: "arnd@arndb.de" , Michal Simek , "linux-arm-kernel@lists.infradead.org" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Derek Kiernan List-Id: devicetree@vger.kernel.org On Fri, May 03, 2019 at 04:46:12PM +0000, Dragan Cvetic wrote: > > > > -----Original Message----- > > From: Greg KH [mailto:gregkh@linuxfoundation.org] > > Sent: Thursday 2 May 2019 18:24 > > To: Dragan Cvetic > > Cc: arnd@arndb.de; Michal Simek ; linux-arm-kernel@lists.infradead.org; robh+dt@kernel.org; > > mark.rutland@arm.com; devicetree@vger.kernel.org; linux-kernel@vger.kernel.org; Derek Kiernan > > Subject: Re: [PATCH V3 04/12] misc: xilinx_sdfec: Add open, close and ioctl > > > > On Sat, Apr 27, 2019 at 11:04:58PM +0100, Dragan Cvetic wrote: > > > Add char device interface per DT node present and support > > > file operations: > > > - open(), > > > - close(), > > > - unlocked_ioctl(), > > > - compat_ioctl(). > > > > Why do you need compat_ioctl() at all? Any "new" driver should never > > need it. Just create your structures properly. > > This was a comment from Arnd, see https://lkml.org/lkml/2019/3/19/377. > Please advise. Why do you need a compat_ioctl callback when there is nothing to fix up? thanks, greg k-h