Commit 43aeaa29 authored Jul 10, 2013 by Mikulas Patocka Committed by Alasdair G Kergon Jul 10, 2013

dm cache: fix arm link errors with inline



Use __always_inline to avoid a link failure with gcc 4.6 on ARM.
gcc 4.7 is OK.

It creates a function block_div.part.8, it references __udivdi3 and
__umoddi3 and it is never called. The references to __udivdi3 and
__umoddi3 cause a link failure.

Reported-by: Rob Herring <robherring2@gmail.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

parent 553d8fe0

drivers/md/dm-cache-target.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -425,6 +425,10 @@ static bool block_size_is_power_of_two(struct cache *cache)
		return cache->sectors_per_block_shift >= 0;
		}

		/* gcc on ARM generates spurious references to __udivdi3 and __umoddi3 */
		#if defined(CONFIG_ARM) && __GNUC__ == 4 && __GNUC_MINOR__ <= 6
		__always_inline
		#endif
		static dm_block_t block_div(dm_block_t b, uint32_t n)
		{
		do_div(b, n);