On 07. 11. 18 9:55, Nathan Chancellor wrote:

On Wed, Nov 07, 2018 at 09:46:12AM +0100, Michal Simek wrote:

quoted

On 01. 11. 18 1:57, Nathan Chancellor wrote:

quoted

Clang warns when one enumerated type is implicitly converted to another:

drivers/pinctrl/pinctrl-zynq.c:985:18: warning: implicit conversion from
enumeration type 'enum zynq_pin_config_param' to different enumeration
type 'enum pin_config_param' [-Wenum-conversion]
        {"io-standard", PIN_CONFIG_IOSTANDARD, zynq_iostd_lvcmos18},
        ~               ^~~~~~~~~~~~~~~~~~~~~
drivers/pinctrl/pinctrl-zynq.c:990:16: warning: implicit conversion from
enumeration type 'enum zynq_pin_config_param' to different enumeration
type 'enum pin_config_param' [-Wenum-conversion]
        = { PCONFDUMP(PIN_CONFIG_IOSTANDARD, "IO-standard", NULL, true),
            ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/linux/pinctrl/pinconf-generic.h:163:11: note: expanded from
macro 'PCONFDUMP'
        .param = a, .display = b, .format = c, .has_arg = d     \
                 ^
2 warnings generated.

This is interesting. I have never tried to use llvm for building the
kernel. Do you have any description how this can be done?

Depending on what version of Clang you have access to, it is usually just as
simple as running 'make ARCH=arm CC=clang CROSS_COMPILE=arm-linux-gnueabi-'.

Clang 7.0+ is recommended but 6.0 might work too.

TBH I would expect to download container and run this there to make sure
that I don't break anything else.

Thanks,
Michal