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make IS_ERR_VALUE() complain about non-pointer-sized arguments 

Now that the allmodconfig x86-64 build is clean wrt IS_ERR_VALUE() uses
on integers, add a cast to a pointer and back to the argument, so that
any new mis-uses of IS_ERR_VALUE() will cause warnings like

   warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

so that we don't re-introduce any bogus uses.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2016-05-27 16:03:22 -07:00
parent 5d22fc25d4
commit aa00edc128
1 changed files with 1 additions and 1 deletions
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2
include/linux/err.h
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@ -18,7 +18,7 @@
#ifndef __ASSEMBLY__
#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
#define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
static inline void * __must_check ERR_PTR(long error)
{