| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 040/101] ia64, processor: fix -Wincompatible-pointer-types in ia64_get_irr() | Date | Tue, 23 Aug 2022 10:03:13 +0200 |
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From: Alexander Lobakin <alexandr.lobakin@intel.com>
commit e5a16a5c4602c119262f350274021f90465f479d upstream.
test_bit(), as any other bitmap op, takes `unsigned long *` as a second argument (pointer to the actual bitmap), as any bitmap itself is an array of unsigned longs. However, the ia64_get_irr() code passes a ref to `u64` as a second argument. This works with the ia64 bitops implementation due to that they have `void *` as the second argument and then cast it later on. This works with the bitmap API itself due to that `unsigned long` has the same size on ia64 as `u64` (`unsigned long long`), but from the compiler PoV those two are different. Define @irr as `unsigned long` to fix that. That implies no functional changes. Has been hidden for 16 years!
Fixes: a58786917ce2 ("[IA64] avoid broken SAL_CACHE_FLUSH implementations") Cc: stable@vger.kernel.org # 2.6.16+ Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/ia64/include/asm/processor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/ia64/include/asm/processor.h +++ b/arch/ia64/include/asm/processor.h @@ -554,7 +554,7 @@ ia64_get_irr(unsigned int vector) { unsigned int reg = vector / 64; unsigned int bit = vector % 64; - u64 irr; + unsigned long irr; switch (reg) { case 0: irr = ia64_getreg(_IA64_REG_CR_IRR0); break;
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