When trying to compile my own kernel with "device pst" in configuration file, process fail with message: cc -c -O2 -pipe -fno-strict-aliasing -std=c99 -g -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -Wundef -Wno-pointer-sign -fformat-extensions -Wmissing-include-dirs -fdiagnostics-show-option -Wno-error-tautological-compare -Wno-error-empty-body -Wno-error-parentheses-equality -nostdinc -I. -I/usr/src/sys -I/usr/src/sys/contrib/altq -I/usr/src/sys/contrib/libfdt -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -mno-aes -mno-avx -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -msoft-float -fno-asynchronous-unwind-tables -ffreestanding -fstack-protector -Werror /usr/src/sys/dev/pst/pst-iop.c /usr/src/sys/dev/pst/pst-iop.c:197:3: error: cast to 'void (*)(struct iop_softc *, u_int32_t, struct i2o_single_reply *)' from smaller integer type 'u_int32_t' (aka 'unsigned int') [-Werror,-Wint-to-pointer-cast] ((void (*)(struct iop_softc *, u_int32_t, struct i2o_single_reply *)) ^ /usr/src/sys/dev/pst/pst-iop.c:419:9: error: cast to 'struct iop_request *' from smaller integer type 'u_int32_t' (aka 'unsigned int') [-Werror,-Wint-to-pointer-cast] (struct iop_request *)reply->transaction_context; ^ 2 errors generated. As we see from /usr/src/sys/dev/pst/pst-iop.h, initiator_context and transaction_context fields of driver message struct are declared as u_int32_t, which doesn't match pointer size on 64-bit processor. Fix: The controller is very old hardware and one of fix may be exclude it from available devices on amd64 platform. How-To-Repeat: On amd64 machine include device pst in your config file and try compile kernel.
> The controller is very old hardware and one of fix may be exclude it from available devices on amd64 platform. Yes, this driver is not supported on amd64. Do you need it to work? You would need to implement a cookie hash table of some sort to map transaction context IDs to request pointers. If you do not need it, we should probably disable it on amd64 as no one else has asked about it. -- John Baldwin
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