On May 3, 2015 4:35:37 AM EDT, Harsh Jain <harshjain.prof@xxxxxxxxx> wrote: >Hi All, > >I am trying to compile simple kernel module. It gives following error. >Same >module compiles succesfully on another 64 bit ubuntu OS.Any idea what >different in environment can cause this. Both machine are ubuntu 12.04. >On >32 ubuntu bit compilation fails. > >In file included from /home/aricent/try5/eudy_misc_driver.c:7:0: >include/asm-generic/uaccess.h:41:0: warning: "access_ok" redefined >[enabled >by default] > #define access_ok(type, addr, size) __access_ok((unsigned >long)(addr),(size)) > ^ >In file included from >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/sections.h:5:0, > from >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/hw_irq.h:26, > from include/linux/irq.h:368, > from >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/hardirq.h:5, > from include/linux/preempt_mask.h:5, > from include/linux/sched.h:25, > from include/asm-generic/uaccess.h:9, > from /home/aricent/try5/eudy_misc_driver.c:7: >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/uaccess.h:80:0: >note: this is the location of the previous definition > #define access_ok(type, addr, size) \ > >In file included from /home/aricent/try5/eudy_misc_driver.c:7:0: >include/asm-generic/uaccess.h:337:1: error: static declaration of >‘clear_user’ follows non-static declaration > clear_user(void __user *to, unsigned long n) > ^ >In file included from >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/sections.h:5:0, > from >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/hw_irq.h:26, > from include/linux/irq.h:368, > from >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/hardirq.h:5, > from include/linux/preempt_mask.h:5, > from include/linux/sched.h:25, > from include/asm-generic/uaccess.h:9, > from /home/aricent/try5/eudy_misc_driver.c:7: >/usr/src/linux-headers-3.13.0-43-generic/arch/x86/include/asm/uaccess.h:525:28: >note: previous declaration of ‘clear_user’ was here >unsigned long __must_check clear_user(void __user *mem, unsigned long >len); > > > >Regards >Harsh Jain > > >------------------------------------------------------------------------ > >_______________________________________________ I would like to see the code first but my feeling is your using 64 bit variables of 32 bit machine. Nick >Kernelnewbies mailing list >Kernelnewbies@xxxxxxxxxxxxxxxxx >http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -- Sent from my Android device with K-9 Mail. Please excuse my brevity. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
