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Commit d129efd7 authored by Skylar Chang's avatar Skylar Chang Committed by Ravi Gummadidala
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msm: ipa: Add check for ipa_nat_mmap map limit 



Add check for ipa_nat_mmap limit that allows mapping
from non ipa memory to user-space.

CRs-Fixed: 548676

Change-Id: If7f74d60342028f7653b39731b530bb13f09d991
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
Signed-off-by: default avatarRavi Gummadidala <rgummadi@codeaurora.org>
parent 70979abc

drivers/platform/msm/ipa/ipa_nat.c

+6 −0
Original line number Diff line number Diff line
@@ -79,6 +79,12 @@ static int ipa_nat_mmap(struct file *filp, struct vm_area_struct *vma) 
	} else {

		IPADBG("Mapping shared(local) memory\n");

		IPADBG("map sz=0x%lx\n", vsize);



		if ((IPA_NAT_PHYS_MEM_SIZE == 0) ||

				(vsize > IPA_NAT_PHYS_MEM_SIZE)) {

			result = -EINVAL;

			goto bail;

		}

		phys_addr = ipa_ctx->ipa_wrapper_base + IPA_REG_BASE_OFST +

			IPA_SRAM_DIRECT_ACCESS_N_OFST(IPA_NAT_PHYS_MEM_OFFSET);