DPDK patches and discussions
 help / color / mirror / Atom feed
* [dpdk-dev] [PATCH] common/dpaax: fix uninitialized table case
@ 2018-10-17  9:05 Shreyansh Jain
  2018-10-24 22:32 ` Thomas Monjalon
  0 siblings, 1 reply; 2+ messages in thread
From: Shreyansh Jain @ 2018-10-17  9:05 UTC (permalink / raw)
  To: thomas; +Cc: dev, Shreyansh Jain

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>
---
 drivers/common/dpaax/dpaax_iova_table.c | 3 +++
 drivers/common/dpaax/dpaax_iova_table.h | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/drivers/common/dpaax/dpaax_iova_table.c b/drivers/common/dpaax/dpaax_iova_table.c
index d54267bb7..075053b1a 100644
--- a/drivers/common/dpaax/dpaax_iova_table.c
+++ b/drivers/common/dpaax/dpaax_iova_table.c
@@ -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);
 
diff --git a/drivers/common/dpaax/dpaax_iova_table.h b/drivers/common/dpaax/dpaax_iova_table.h
index 1109a362c..138827e7b 100644
--- a/drivers/common/dpaax/dpaax_iova_table.h
+++ b/drivers/common/dpaax/dpaax_iova_table.h
@@ -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 {
-- 
2.17.1

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2018-10-24 22:32 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-10-17  9:05 [dpdk-dev] [PATCH] common/dpaax: fix uninitialized table case Shreyansh Jain
2018-10-24 22:32 ` Thomas Monjalon

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).