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common/dpaax: fix uninitialized PA-VA table case

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There is a possibility that either because of missing device tree entry
or lack of memory, the PA-VA table might not be available. But, the
table being transparent, the callers don't necessary check for its
initialization state. This is explicitly done during update and
translation call.

Fixes: 2f3d633aa593 ("common/dpaax: add library for PA/VA translation table")

Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
This commit is contained in:
Shreyansh Jain 2018-10-17 09:05:57 +00:00 committed by Thomas Monjalon
parent fa443893bc
commit 29ba8d9436
2 changed files with 6 additions and 0 deletions
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3
drivers/common/dpaax/dpaax_iova_table.c
View File

@ -272,6 +272,9 @@ dpaax_iova_table_update(phys_addr_t paddr, void *vaddr, size_t length)
uintptr_t align_vaddr;
phys_addr_t align_paddr;
if (unlikely(dpaax_iova_table_p == NULL))
return -1;
align_paddr = paddr & DPAAX_MEM_SPLIT_MASK;
align_vaddr = ((uintptr_t)vaddr & DPAAX_MEM_SPLIT_MASK);

3
drivers/common/dpaax/dpaax_iova_table.h
View File

@ -74,6 +74,9 @@ dpaax_iova_table_get_va(phys_addr_t paddr) {
size_t offset = paddr & DPAAX_MEM_SPLIT_MASK_OFF;
struct dpaax_iovat_element *entry;
if (unlikely(dpaax_iova_table_p == NULL))
return NULL;
entry = dpaax_iova_table_p->entries;
do {