Hi All, I have compiled the latest linux kernel (3.3.2) (after hearing the provided support of this series after the 2.6 series )for ARM platform on fedora box. I faced couple of problems: 1. BUILD_BUG_ON : There were errors and make stopped for couple of files. The error said , negative type value for array. At this moment, I have just commented the calls. However just wondering what could be potential problem? 2. __bad_udelay After making the above changes, the compilation finished just fine, however doing modpost presented new problems as mentioned below: OBJCOPY arch/arm/boot/zImage Kernel: arch/arm/boot/zImage is ready Building modules, stage 2. MODPOST 2136 modules ERROR: "__bad_udelay" [sound/pci/ali5451/snd-ali5451.ko] undefined! ERROR: "__bad_udelay" [drivers/scsi/atp870u.ko] undefined! ERROR: "__bad_udelay" [drivers/net/ethernet/sun/sungem.ko] undefined! ERROR: "__bad_udelay" [drivers/gpu/drm/radeon/radeon.ko] undefined! ERROR: "__bad_udelay" [drivers/gpu/drm/nouveau/nouveau.ko] undefined! ERROR: "__bad_udelay" [drivers/atm/he.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 I have to go and replace many of the calls for udelay having value greater than 2000 with mdelay(2) or more. So is it that these drivers are not meant for ARM or they are not yet completely supported for ARM? Regards, Abhijit Pawar