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There are four state machines in drbd that use a common infrastructure, with
a cast to an incompatible function type in REMEMBER_STATE_CHANGE that clang-16
now warns about:
drivers/block/drbd/drbd_state.c:1632:3: error: cast from 'int (*)(struct sk_buff *, unsigned int, struct drbd_resource_state_change *, enum drbd_notification_type)' to 'typeof (last_func)' (aka 'int (*)(struct sk_buff *, unsigned int, void *, enum drbd_notification_type)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
1632 | REMEMBER_STATE_CHANGE(notify_resource_state_change,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1633 | resource_state_change, NOTIFY_CHANGE);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/drbd/drbd_state.c:1619:17: note: expanded from macro 'REMEMBER_STATE_CHANGE'
1619 | last_func = (typeof(last_func))func; \
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/block/drbd/drbd_state.c:1641:4: error: cast from 'int (*)(struct sk_buff *, unsigned int, struct drbd_connection_state_change *, enum drbd_notification_type)' to 'typeof (last_func)' (aka 'int (*)(struct sk_buff *, unsigned int, void *, enum drbd_notification_type)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
1641 | REMEMBER_STATE_CHANGE(notify_connection_state_change,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1642 | connection_state_change, NOTIFY_CHANGE);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Change these all to actually expect a void pointer to be passed, which
matches the caller.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240213100354.457128-1-arnd@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fe0b1e9a73