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We have compiled our own 4.8 kernel because we needed some extra features and have tried to apply the patch to elan-mmcr.c from http://wleiden.webweaving.org:8080/svn/node-config/soekris/watchdog/patch.elan-mmrc.c.txt However, that patch was applied to the 5.x code base. When I grabbed the elan-mmcr.c file from the 5.x code base it was quite different from the 4.x base. That code will not compile. Here is the complaints. cc -c -O -pipe -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I../.. -I../../../include -I../../contrib/ipfilter -D_KERNEL -include opt_global.h -mpreferred-stack-boundary=2 ../../i386/i386/elan-mmcr.c ../../i386/i386/elan-mmcr.c:27: sys/timetc.h: No such file or directory ../../i386/i386/elan-mmcr.c:31: sys/mutex.h: No such file or directory ../../i386/i386/elan-mmcr.c: In function `init_AMD_Elan_sc520': ../../i386/i386/elan-mmcr.c:80: `thread0' undeclared (first use in this function) ../../i386/i386/elan-mmcr.c:80: (Each undeclared identifier is reported only once ../../i386/i386/elan-mmcr.c:80: for each function it appears in.) ../../i386/i386/elan-mmcr.c:89: warning: implicit declaration of function `tc_init' ../../i386/i386/elan-mmcr.c: In function `elan_drvinit': ../../i386/i386/elan-mmcr.c:132: warning: implicit declaration of function `mtx_init' ../../i386/i386/elan-mmcr.c:132: `MTX_DEF' undeclared (first use in this function) ../../i386/i386/elan-mmcr.c: In function `timeout_errled': ../../i386/i386/elan-mmcr.c:147: warning: implicit declaration of function `mtx_lock' ../../i386/i386/elan-mmcr.c:204: warning: implicit declaration of function `mtx_unlock' ../../i386/i386/elan-mmcr.c: At top level: ../../i386/i386/elan-mmcr.c:317: warning: `struct thread' declared inside parameter list ../../i386/i386/elan-mmcr.c:317: warning: its scope is only this definition or declaration, which is probably not what you want. ../../i386/i386/elan-mmcr.c:318: conflicting types for `elan_ioctl' ../../i386/i386/elan-mmcr.c:98: previous declaration of `elan_ioctl' ../../i386/i386/elan-mmcr.c:43: storage size of `errled_mtx' isn't known *** Error code 1 |