Commit 7bf2abd3 authored Jun 04, 2014 by Taniya Das

soc: qcom: peripheral-loader: Add attribute to skip zeroing memory



When a subsystem crashes and there is no executing entity that can clear
memory protection, subsequent accesses to that memory will fail.
dma_alloc_attrs tries to zero out memory and can trigger this problem.
Prevent dma_alloc_attrs from attempting to zero out memory.

Change-Id: Ia94c035e566c777385613a1f662aa7571b082651
Signed-off-by: Taniya Das <tdas@codeaurora.org>

parent 38be2e8f

drivers/soc/qcom/peripheral-loader.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -378,6 +378,7 @@ static int pil_alloc_region(struct pil_priv *priv, phys_addr_t min_addr,
		else
		aligned_size = ALIGN(size, SZ_1M);

		dma_set_attr(DMA_ATTR_SKIP_ZEROING, &attrs);
		region = dma_alloc_attrs(priv->desc->dev, aligned_size,
		&priv->region_start, GFP_KERNEL, &attrs);