ARM: 8551/2: DMA: Fix kzalloc flags in __dma_alloc

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Commit 19e6e5e539 ("ARM: 8547/1: dma-mapping: store buffer
information") allocates a structure meant for internal buffer management
with the GFP flags of the buffer itself. This can trigger the following
safeguard in the slab/slub allocator:

	if (unlikely(flags & GFP_SLAB_BUG_MASK)) {
		pr_emerg("gfp: %un", flags & GFP_SLAB_BUG_MASK);
		BUG();
	}

Fix this by filtering the flags that make the slab allocator unhappy.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Alexandre Courbot 2016-04-13 05:55:29 +01:00 • committed by Russell King

parent 208fae5c3b

commit 9c18fcf7ae

1 changed files with 2 additions and 1 deletions

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arch/arm/mm/dma-mapping.c

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