Re: [PATCH] jump_label: Fix sparc64 warning

[David Miller]

From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Date: Wed, 14 Mar 2018 10:24:20 -0500

> The kbuild test robot reported the following warning on sparc64:
> 
>   kernel/jump_label.c: In function '__jump_label_update':
>   kernel/jump_label.c:376:51: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>        WARN_ONCE(1, "can't patch jump_label at %pS", (void *)entry->code);
> 
> On sparc64, the jump_label entry->code field is of type u32, but
> pointers are 64-bit.  Silence the warning by casting entry->code to an
> unsigned long before casting it to a pointer.  This is also what the
> sparc jump label code does.
> 
> Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
> Fixes: dc1dd184c2f0 ("jump_label: Warn on failed jump_label patching attempt")
> Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>

Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>