On Friday 09 November 2018 02:31 PM, Linus Walleij wrote:
On Thu, Nov 1, 2018 at 1:51 AM Nathan Chancellor
<natechancel...@gmail.com> wrote:

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

drivers/pinctrl/pinctrl-max77620.c:56:12: warning: implicit conversion
from enumeration type 'enum max77620_pinconf_param' to different
enumeration type 'enum pin_config_param' [-Wenum-conversion]
                 .param = MAX77620_ACTIVE_FPS_SOURCE,
                          ^~~~~~~~~~~~~~~~~~~~~~~~~~

It is expected that pinctrl drivers can extend pin_config_param because
of the gap between PIN_CONFIG_END and PIN_CONFIG_MAX so this conversion
isn't an issue. Most drivers that take advantage of this define the
PIN_CONFIG variables as constants, rather than enumerated values. Do the
same thing here so that Clang no longer warns.

Link: https://github.com/ClangBuiltLinux/linux/issues/139
Signed-off-by: Nathan Chancellor <natechancel...@gmail.com>
Patch tentatively applied.

This seems to be the direction we need to be going with a lot
of CLANG business.

Laxman: you weren't CCed, so tell us if you dislike it for some
reason.

Looked changes and it is great. MISRA-C also happy with macros instead of enum.

Acked-by: Laxman Dewangan <ldewan...@nvidia.com>


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