On Sun, May 24, 2020 at 06:19:22PM +0530, GAURAV PATHAK wrote: > Thanks a lot for your reply. > I am trying to run sparse on drivers/staging directory, > but I am not getting any useful warnings. > Steps that I did: > > - Referred https://www.kernel.org/doc/man-pages/linux-next.html to get > linux-next latest tag next-20200522. > - After that executed following commands: > - make mrproper; make clean; make distclean > - make defconfig > - make menuconfig (Enabled all Staging Drivers with M) > - make modules_prepare > - make C=1 M=drivers/staging (Also tried individual directories > inside staging directory e.g. make C=1 M=drivers/staging/comedi/drivers) > > I am not getting any warning, I have attached the output in text format. > > Any pointers for finding warning using sparse in drivers/staging > directory will be helpful. I really appretiate your guidance in this > regard. Well it seems that most staging drivers have no sparse warnings at all. I only see somes in the following staging drivers: drivers/staging/isdn/ drivers/staging/kpc2000/ drivers/staging/uwb/ drivers/staging/vc04_services/ drivers/staging/wfx/ drivers/staging/wusbcore/ Your commands seems to be good but I would advice you to use 'C=2' instead of 'C=1' in order for sparse to effectively run on each input file even when the corresponding .o file already exists. The simplest to use is: - make allmodconfig - make -j8 drivers/staging/ This will just compile all the files without running sparse. So all warnings will be from the compiler. The you can run: - make C=2 drivers/staging/ which will only run sparse (and will thus be much faster). Best regards, -- Luc _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
