evie/android_kernel_oneplus_msm8998
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msm: ion: Modified Secure Display buffer permissions

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Made Secure Display buffer permissions RO instead of RW.

Change-Id: I617a3bb5cbb80ac3967ab14f37452c461bb4df77
Signed-off-by: Shay Nachmani <shayn@codeaurora.org>
This commit is contained in:
Shay Nachmani 2016-11-23 12:04:29 +02:00
parent 9febdfdde0
commit 51b8d2c499
1 changed files with 6 additions and 1 deletions
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7
drivers/staging/android/ion/ion_cma_heap.c
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@ -274,11 +274,16 @@ static int ion_secure_cma_allocate(struct ion_heap *heap,
source_vm = VMID_HLOS; source_vm = VMID_HLOS;
dest_vm = get_secure_vmid(flags); dest_vm = get_secure_vmid(flags);
if (dest_vm < 0) { if (dest_vm < 0) {
pr_err("%s: Failed to get secure vmid\n", __func__); pr_err("%s: Failed to get secure vmid\n", __func__);
return -EINVAL; return -EINVAL;
} }
dest_perms = PERM_READ | PERM_WRITE;
if (dest_vm == VMID_CP_SEC_DISPLAY)
dest_perms = PERM_READ;
else
dest_perms = PERM_READ | PERM_WRITE;
ret = ion_cma_allocate(heap, buffer, len, align, flags); ret = ion_cma_allocate(heap, buffer, len, align, flags);
if (ret) { if (ret) {